Home / 31,815.48-47,650.55-15,187.20

Finding the Fourth Proportional to 31,815.48, 47,650.55 and 15,187.20

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Solution

The fourth proportional to 31,815.48, 47,650.55 and 15,187.20 is: 22,746.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,815.48 : 47,650.55 = 15,187.20 : x
  2. Step 2: Convert to fraction form
    31,815.48/47,650.55 = 15,187.20/x
  3. Step 3: Cross multiply
    31,815.48x = 47,650.55 × 15,187.20
  4. Step 4: Simplify right side
    31,815.48x = 723,678,178.33
  5. Step 5: Solve for x
    x = 723,678,178.33/31,815.48
  6. Step 6: Final answer
    x = 22,746.10

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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.