Home / 38,509.08-53,136.54-21,741.72

Finding the Fourth Proportional to 38,509.08, 53,136.54 and 21,741.72

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Solution

The fourth proportional to 38,509.08, 53,136.54 and 21,741.72 is: 30,000.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,509.08 : 53,136.54 = 21,741.72 : x
  2. Step 2: Convert to fraction form
    38,509.08/53,136.54 = 21,741.72/x
  3. Step 3: Cross multiply
    38,509.08x = 53,136.54 × 21,741.72
  4. Step 4: Simplify right side
    38,509.08x = 1,155,279,774.45
  5. Step 5: Solve for x
    x = 1,155,279,774.45/38,509.08
  6. Step 6: Final answer
    x = 30,000.19

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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.