Home / 20,017.68-29,952.12-12,587.40

Finding the Fourth Proportional to 20,017.68, 29,952.12 and 12,587.40

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Solution

The fourth proportional to 20,017.68, 29,952.12 and 12,587.40 is: 18,834.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,017.68 : 29,952.12 = 12,587.40 : x
  2. Step 2: Convert to fraction form
    20,017.68/29,952.12 = 12,587.40/x
  3. Step 3: Cross multiply
    20,017.68x = 29,952.12 × 12,587.40
  4. Step 4: Simplify right side
    20,017.68x = 377,019,315.29
  5. Step 5: Solve for x
    x = 377,019,315.29/20,017.68
  6. Step 6: Final answer
    x = 18,834.32

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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.