Home / 31,931.40-47,879.40-14,815.62

Finding the Fourth Proportional to 31,931.40, 47,879.40 and 14,815.62

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Solution

The fourth proportional to 31,931.40, 47,879.40 and 14,815.62 is: 22,215.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,931.40 : 47,879.40 = 14,815.62 : x
  2. Step 2: Convert to fraction form
    31,931.40/47,879.40 = 14,815.62/x
  3. Step 3: Cross multiply
    31,931.40x = 47,879.40 × 14,815.62
  4. Step 4: Simplify right side
    31,931.40x = 709,362,996.23
  5. Step 5: Solve for x
    x = 709,362,996.23/31,931.40
  6. Step 6: Final answer
    x = 22,215.22

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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.