Home / 31,547.32-47,321.40-20,941.52

Finding the Fourth Proportional to 31,547.32, 47,321.40 and 20,941.52

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Solution

The fourth proportional to 31,547.32, 47,321.40 and 20,941.52 is: 31,412.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,547.32 : 47,321.40 = 20,941.52 : x
  2. Step 2: Convert to fraction form
    31,547.32/47,321.40 = 20,941.52/x
  3. Step 3: Cross multiply
    31,547.32x = 47,321.40 × 20,941.52
  4. Step 4: Simplify right side
    31,547.32x = 990,982,044.53
  5. Step 5: Solve for x
    x = 990,982,044.53/31,547.32
  6. Step 6: Final answer
    x = 31,412.56

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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.