Home / 15,356.20-23,047.80-9,108.40

Finding the Fourth Proportional to 15,356.20, 23,047.80 and 9,108.40

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Solution

The fourth proportional to 15,356.20, 23,047.80 and 9,108.40 is: 13,670.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,356.20 : 23,047.80 = 9,108.40 : x
  2. Step 2: Convert to fraction form
    15,356.20/23,047.80 = 9,108.40/x
  3. Step 3: Cross multiply
    15,356.20x = 23,047.80 × 9,108.40
  4. Step 4: Simplify right side
    15,356.20x = 209,928,581.52
  5. Step 5: Solve for x
    x = 209,928,581.52/15,356.20
  6. Step 6: Final answer
    x = 13,670.61

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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.