Home / 38,715.22-53,423.80-21,717.10

Finding the Fourth Proportional to 38,715.22, 53,423.80 and 21,717.10

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Solution

The fourth proportional to 38,715.22, 53,423.80 and 21,717.10 is: 29,967.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,715.22 : 53,423.80 = 21,717.10 : x
  2. Step 2: Convert to fraction form
    38,715.22/53,423.80 = 21,717.10/x
  3. Step 3: Cross multiply
    38,715.22x = 53,423.80 × 21,717.10
  4. Step 4: Simplify right side
    38,715.22x = 1,160,210,006.98
  5. Step 5: Solve for x
    x = 1,160,210,006.98/38,715.22
  6. Step 6: Final answer
    x = 29,967.80

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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.