Home / 19,918.55-29,877.84-5,127.50

Finding the Fourth Proportional to 19,918.55, 29,877.84 and 5,127.50

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Solution

The fourth proportional to 19,918.55, 29,877.84 and 5,127.50 is: 7,691.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.55 : 29,877.84 = 5,127.50 : x
  2. Step 2: Convert to fraction form
    19,918.55/29,877.84 = 5,127.50/x
  3. Step 3: Cross multiply
    19,918.55x = 29,877.84 × 5,127.50
  4. Step 4: Simplify right side
    19,918.55x = 153,198,475.21
  5. Step 5: Solve for x
    x = 153,198,475.21/19,918.55
  6. Step 6: Final answer
    x = 7,691.25

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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.