Home / 20,926.55-31,363.12-9,808.75

Finding the Fourth Proportional to 20,926.55, 31,363.12 and 9,808.75

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Solution

The fourth proportional to 20,926.55, 31,363.12 and 9,808.75 is: 14,700.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,926.55 : 31,363.12 = 9,808.75 : x
  2. Step 2: Convert to fraction form
    20,926.55/31,363.12 = 9,808.75/x
  3. Step 3: Cross multiply
    20,926.55x = 31,363.12 × 9,808.75
  4. Step 4: Simplify right side
    20,926.55x = 307,632,823.17
  5. Step 5: Solve for x
    x = 307,632,823.17/20,926.55
  6. Step 6: Final answer
    x = 14,700.60

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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.