Home / 31,443.08-47,154.60-10,379.20

Finding the Fourth Proportional to 31,443.08, 47,154.60 and 10,379.20

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Solution

The fourth proportional to 31,443.08, 47,154.60 and 10,379.20 is: 15,565.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,443.08 : 47,154.60 = 10,379.20 : x
  2. Step 2: Convert to fraction form
    31,443.08/47,154.60 = 10,379.20/x
  3. Step 3: Cross multiply
    31,443.08x = 47,154.60 × 10,379.20
  4. Step 4: Simplify right side
    31,443.08x = 489,427,024.32
  5. Step 5: Solve for x
    x = 489,427,024.32/31,443.08
  6. Step 6: Final answer
    x = 15,565.49

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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.