Home / 31,877.04-47,776.12-13,145.20

Finding the Fourth Proportional to 31,877.04, 47,776.12 and 13,145.20

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Solution

The fourth proportional to 31,877.04, 47,776.12 and 13,145.20 is: 19,701.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,877.04 : 47,776.12 = 13,145.20 : x
  2. Step 2: Convert to fraction form
    31,877.04/47,776.12 = 13,145.20/x
  3. Step 3: Cross multiply
    31,877.04x = 47,776.12 × 13,145.20
  4. Step 4: Simplify right side
    31,877.04x = 628,026,652.62
  5. Step 5: Solve for x
    x = 628,026,652.62/31,877.04
  6. Step 6: Final answer
    x = 19,701.54

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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.