Home / 31,417.68-47,129.95-13,636.11

Finding the Fourth Proportional to 31,417.68, 47,129.95 and 13,636.11

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Solution

The fourth proportional to 31,417.68, 47,129.95 and 13,636.11 is: 20,455.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,417.68 : 47,129.95 = 13,636.11 : x
  2. Step 2: Convert to fraction form
    31,417.68/47,129.95 = 13,636.11/x
  3. Step 3: Cross multiply
    31,417.68x = 47,129.95 × 13,636.11
  4. Step 4: Simplify right side
    31,417.68x = 642,669,182.49
  5. Step 5: Solve for x
    x = 642,669,182.49/31,417.68
  6. Step 6: Final answer
    x = 20,455.65

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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.