Home / 15,017.68-20,732.84-9,988.75

Finding the Fourth Proportional to 15,017.68, 20,732.84 and 9,988.75

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Solution

The fourth proportional to 15,017.68, 20,732.84 and 9,988.75 is: 13,790.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,017.68 : 20,732.84 = 9,988.75 : x
  2. Step 2: Convert to fraction form
    15,017.68/20,732.84 = 9,988.75/x
  3. Step 3: Cross multiply
    15,017.68x = 20,732.84 × 9,988.75
  4. Step 4: Simplify right side
    15,017.68x = 207,095,155.55
  5. Step 5: Solve for x
    x = 207,095,155.55/15,017.68
  6. Step 6: Final answer
    x = 13,790.09

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.