Home / 31,612.19-47,420.10-11,890.91

Finding the Fourth Proportional to 31,612.19, 47,420.10 and 11,890.91

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Solution

The fourth proportional to 31,612.19, 47,420.10 and 11,890.91 is: 17,837.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,612.19 : 47,420.10 = 11,890.91 : x
  2. Step 2: Convert to fraction form
    31,612.19/47,420.10 = 11,890.91/x
  3. Step 3: Cross multiply
    31,612.19x = 47,420.10 × 11,890.91
  4. Step 4: Simplify right side
    31,612.19x = 563,868,141.29
  5. Step 5: Solve for x
    x = 563,868,141.29/31,612.19
  6. Step 6: Final answer
    x = 17,837.05

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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.