Home / 31,636.71-47,356.25-21,115.35

Finding the Fourth Proportional to 31,636.71, 47,356.25 and 21,115.35

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Solution

The fourth proportional to 31,636.71, 47,356.25 and 21,115.35 is: 31,607.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,636.71 : 47,356.25 = 21,115.35 : x
  2. Step 2: Convert to fraction form
    31,636.71/47,356.25 = 21,115.35/x
  3. Step 3: Cross multiply
    31,636.71x = 47,356.25 × 21,115.35
  4. Step 4: Simplify right side
    31,636.71x = 999,943,687.86
  5. Step 5: Solve for x
    x = 999,943,687.86/31,636.71
  6. Step 6: Final answer
    x = 31,607.07

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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.