Home / 10,510.56-15,775.20-5,319.36

Finding the Fourth Proportional to 10,510.56, 15,775.20 and 5,319.36

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Solution

The fourth proportional to 10,510.56, 15,775.20 and 5,319.36 is: 7,983.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,510.56 : 15,775.20 = 5,319.36 : x
  2. Step 2: Convert to fraction form
    10,510.56/15,775.20 = 5,319.36/x
  3. Step 3: Cross multiply
    10,510.56x = 15,775.20 × 5,319.36
  4. Step 4: Simplify right side
    10,510.56x = 83,913,967.87
  5. Step 5: Solve for x
    x = 83,913,967.87/10,510.56
  6. Step 6: Final answer
    x = 7,983.78

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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.