Home / 10,155.28-15,159.35-8,777.47

Finding the Fourth Proportional to 10,155.28, 15,159.35 and 8,777.47

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Solution

The fourth proportional to 10,155.28, 15,159.35 and 8,777.47 is: 13,102.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,155.28 : 15,159.35 = 8,777.47 : x
  2. Step 2: Convert to fraction form
    10,155.28/15,159.35 = 8,777.47/x
  3. Step 3: Cross multiply
    10,155.28x = 15,159.35 × 8,777.47
  4. Step 4: Simplify right side
    10,155.28x = 133,060,739.84
  5. Step 5: Solve for x
    x = 133,060,739.84/10,155.28
  6. Step 6: Final answer
    x = 13,102.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.