Home / 38,385.51-52,970.27-21,391.62

Finding the Fourth Proportional to 38,385.51, 52,970.27 and 21,391.62

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Solution

The fourth proportional to 38,385.51, 52,970.27 and 21,391.62 is: 29,519.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,385.51 : 52,970.27 = 21,391.62 : x
  2. Step 2: Convert to fraction form
    38,385.51/52,970.27 = 21,391.62/x
  3. Step 3: Cross multiply
    38,385.51x = 52,970.27 × 21,391.62
  4. Step 4: Simplify right side
    38,385.51x = 1,133,119,887.14
  5. Step 5: Solve for x
    x = 1,133,119,887.14/38,385.51
  6. Step 6: Final answer
    x = 29,519.47

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Double scale
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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.