Home / 15,116.28-20,860.55-8,402.54

Finding the Fourth Proportional to 15,116.28, 20,860.55 and 8,402.54

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Solution

The fourth proportional to 15,116.28, 20,860.55 and 8,402.54 is: 11,595.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,116.28 : 20,860.55 = 8,402.54 : x
  2. Step 2: Convert to fraction form
    15,116.28/20,860.55 = 8,402.54/x
  3. Step 3: Cross multiply
    15,116.28x = 20,860.55 × 8,402.54
  4. Step 4: Simplify right side
    15,116.28x = 175,281,502.81
  5. Step 5: Solve for x
    x = 175,281,502.81/15,116.28
  6. Step 6: Final answer
    x = 11,595.54

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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.