Home / 31,113-46,655.40-8,921.28

Finding the Fourth Proportional to 31,113, 46,655.40 and 8,921.28

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Solution

The fourth proportional to 31,113, 46,655.40 and 8,921.28 is: 13,377.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,113 : 46,655.40 = 8,921.28 : x
  2. Step 2: Convert to fraction form
    31,113/46,655.40 = 8,921.28/x
  3. Step 3: Cross multiply
    31,113x = 46,655.40 × 8,921.28
  4. Step 4: Simplify right side
    31,113x = 416,225,886.91
  5. Step 5: Solve for x
    x = 416,225,886.91/31,113
  6. Step 6: Final answer
    x = 13,377.88

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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.