Home / 19,988.59-29,977.41-7,507.65

Finding the Fourth Proportional to 19,988.59, 29,977.41 and 7,507.65

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Solution

The fourth proportional to 19,988.59, 29,977.41 and 7,507.65 is: 11,259.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,988.59 : 29,977.41 = 7,507.65 : x
  2. Step 2: Convert to fraction form
    19,988.59/29,977.41 = 7,507.65/x
  3. Step 3: Cross multiply
    19,988.59x = 29,977.41 × 7,507.65
  4. Step 4: Simplify right side
    19,988.59x = 225,059,902.19
  5. Step 5: Solve for x
    x = 225,059,902.19/19,988.59
  6. Step 6: Final answer
    x = 11,259.42

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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.