Home / 10,278.23-15,416.91-7,149.20

Finding the Fourth Proportional to 10,278.23, 15,416.91 and 7,149.20

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Solution

The fourth proportional to 10,278.23, 15,416.91 and 7,149.20 is: 10,723.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,278.23 : 15,416.91 = 7,149.20 : x
  2. Step 2: Convert to fraction form
    10,278.23/15,416.91 = 7,149.20/x
  3. Step 3: Cross multiply
    10,278.23x = 15,416.91 × 7,149.20
  4. Step 4: Simplify right side
    10,278.23x = 110,218,495.89
  5. Step 5: Solve for x
    x = 110,218,495.89/10,278.23
  6. Step 6: Final answer
    x = 10,723.50

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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.