Home / 20,763.90-31,149.95-7,616.38

Finding the Fourth Proportional to 20,763.90, 31,149.95 and 7,616.38

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Solution

The fourth proportional to 20,763.90, 31,149.95 and 7,616.38 is: 11,426.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,763.90 : 31,149.95 = 7,616.38 : x
  2. Step 2: Convert to fraction form
    20,763.90/31,149.95 = 7,616.38/x
  3. Step 3: Cross multiply
    20,763.90x = 31,149.95 × 7,616.38
  4. Step 4: Simplify right side
    20,763.90x = 237,249,856.18
  5. Step 5: Solve for x
    x = 237,249,856.18/20,763.90
  6. Step 6: Final answer
    x = 11,426.07

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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.