Home / 31,572.04-43,585.17-19,639.21

Finding the Fourth Proportional to 31,572.04, 43,585.17 and 19,639.21

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Solution

The fourth proportional to 31,572.04, 43,585.17 and 19,639.21 is: 27,111.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,572.04 : 43,585.17 = 19,639.21 : x
  2. Step 2: Convert to fraction form
    31,572.04/43,585.17 = 19,639.21/x
  3. Step 3: Cross multiply
    31,572.04x = 43,585.17 × 19,639.21
  4. Step 4: Simplify right side
    31,572.04x = 855,978,306.52
  5. Step 5: Solve for x
    x = 855,978,306.52/31,572.04
  6. Step 6: Final answer
    x = 27,111.91

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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.