Home / 21,312.92-31,986.12-14,785.04

Finding the Fourth Proportional to 21,312.92, 31,986.12 and 14,785.04

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Solution

The fourth proportional to 21,312.92, 31,986.12 and 14,785.04 is: 22,189.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,312.92 : 31,986.12 = 14,785.04 : x
  2. Step 2: Convert to fraction form
    21,312.92/31,986.12 = 14,785.04/x
  3. Step 3: Cross multiply
    21,312.92x = 31,986.12 × 14,785.04
  4. Step 4: Simplify right side
    21,312.92x = 472,916,063.64
  5. Step 5: Solve for x
    x = 472,916,063.64/21,312.92
  6. Step 6: Final answer
    x = 22,189.17

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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.