Home / 38,637.72-53,319.33-21,641.76

Finding the Fourth Proportional to 38,637.72, 53,319.33 and 21,641.76

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Solution

The fourth proportional to 38,637.72, 53,319.33 and 21,641.76 is: 29,865.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,637.72 : 53,319.33 = 21,641.76 : x
  2. Step 2: Convert to fraction form
    38,637.72/53,319.33 = 21,641.76/x
  3. Step 3: Cross multiply
    38,637.72x = 53,319.33 × 21,641.76
  4. Step 4: Simplify right side
    38,637.72x = 1,153,924,143.22
  5. Step 5: Solve for x
    x = 1,153,924,143.22/38,637.72
  6. Step 6: Final answer
    x = 29,865.22

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Half scale
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Double scale
Find fourth proportional to 38,638.72, 53,320.71 and 21,642.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.