Home / 31,680.12-47,425.50-19,162.26

Finding the Fourth Proportional to 31,680.12, 47,425.50 and 19,162.26

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Solution

The fourth proportional to 31,680.12, 47,425.50 and 19,162.26 is: 28,686.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,680.12 : 47,425.50 = 19,162.26 : x
  2. Step 2: Convert to fraction form
    31,680.12/47,425.50 = 19,162.26/x
  3. Step 3: Cross multiply
    31,680.12x = 47,425.50 × 19,162.26
  4. Step 4: Simplify right side
    31,680.12x = 908,779,761.63
  5. Step 5: Solve for x
    x = 908,779,761.63/31,680.12
  6. Step 6: Final answer
    x = 28,686.12

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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.