Home / 31,438.74-47,345.28-28,354.26

Finding the Fourth Proportional to 31,438.74, 47,345.28 and 28,354.26

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Solution

The fourth proportional to 31,438.74, 47,345.28 and 28,354.26 is: 42,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,438.74 : 47,345.28 = 28,354.26 : x
  2. Step 2: Convert to fraction form
    31,438.74/47,345.28 = 28,354.26/x
  3. Step 3: Cross multiply
    31,438.74x = 47,345.28 × 28,354.26
  4. Step 4: Simplify right side
    31,438.74x = 1,342,440,378.89
  5. Step 5: Solve for x
    x = 1,342,440,378.89/31,438.74
  6. Step 6: Final answer
    x = 42,700.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.