Home / 31,639.50-47,442.65-12,909.06

Finding the Fourth Proportional to 31,639.50, 47,442.65 and 12,909.06

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Solution

The fourth proportional to 31,639.50, 47,442.65 and 12,909.06 is: 19,356.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,639.50 : 47,442.65 = 12,909.06 : x
  2. Step 2: Convert to fraction form
    31,639.50/47,442.65 = 12,909.06/x
  3. Step 3: Cross multiply
    31,639.50x = 47,442.65 × 12,909.06
  4. Step 4: Simplify right side
    31,639.50x = 612,439,950.86
  5. Step 5: Solve for x
    x = 612,439,950.86/31,639.50
  6. Step 6: Final answer
    x = 19,356.82

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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.