Home / 15,311.40-21,132.02-9,346.52

Finding the Fourth Proportional to 15,311.40, 21,132.02 and 9,346.52

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Solution

The fourth proportional to 15,311.40, 21,132.02 and 9,346.52 is: 12,899.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,311.40 : 21,132.02 = 9,346.52 : x
  2. Step 2: Convert to fraction form
    15,311.40/21,132.02 = 9,346.52/x
  3. Step 3: Cross multiply
    15,311.40x = 21,132.02 × 9,346.52
  4. Step 4: Simplify right side
    15,311.40x = 197,510,847.57
  5. Step 5: Solve for x
    x = 197,510,847.57/15,311.40
  6. Step 6: Final answer
    x = 12,899.59

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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.