Home / 31,385.55-43,312.13-17,239.30

Finding the Fourth Proportional to 31,385.55, 43,312.13 and 17,239.30

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Solution

The fourth proportional to 31,385.55, 43,312.13 and 17,239.30 is: 23,790.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,385.55 : 43,312.13 = 17,239.30 : x
  2. Step 2: Convert to fraction form
    31,385.55/43,312.13 = 17,239.30/x
  3. Step 3: Cross multiply
    31,385.55x = 43,312.13 × 17,239.30
  4. Step 4: Simplify right side
    31,385.55x = 746,670,802.71
  5. Step 5: Solve for x
    x = 746,670,802.71/31,385.55
  6. Step 6: Final answer
    x = 23,790.27

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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.