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Finding the Fourth Proportional to 38,457.40, 57,711.90 and 13,497.40

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Solution

The fourth proportional to 38,457.40, 57,711.90 and 13,497.40 is: 20,255.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,457.40 : 57,711.90 = 13,497.40 : x
  2. Step 2: Convert to fraction form
    38,457.40/57,711.90 = 13,497.40/x
  3. Step 3: Cross multiply
    38,457.40x = 57,711.90 × 13,497.40
  4. Step 4: Simplify right side
    38,457.40x = 778,960,599.06
  5. Step 5: Solve for x
    x = 778,960,599.06/38,457.40
  6. Step 6: Final answer
    x = 20,255.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.