Home / 10,001.28-15,005.16-4,807.56

Finding the Fourth Proportional to 10,001.28, 15,005.16 and 4,807.56

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Solution

The fourth proportional to 10,001.28, 15,005.16 and 4,807.56 is: 7,212.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,001.28 : 15,005.16 = 4,807.56 : x
  2. Step 2: Convert to fraction form
    10,001.28/15,005.16 = 4,807.56/x
  3. Step 3: Cross multiply
    10,001.28x = 15,005.16 × 4,807.56
  4. Step 4: Simplify right side
    10,001.28x = 72,138,207.01
  5. Step 5: Solve for x
    x = 72,138,207.01/10,001.28
  6. Step 6: Final answer
    x = 7,212.90

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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.