Home / 10,478.93-15,720.02-4,932.86

Finding the Fourth Proportional to 10,478.93, 15,720.02 and 4,932.86

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Solution

The fourth proportional to 10,478.93, 15,720.02 and 4,932.86 is: 7,400.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,478.93 : 15,720.02 = 4,932.86 : x
  2. Step 2: Convert to fraction form
    10,478.93/15,720.02 = 4,932.86/x
  3. Step 3: Cross multiply
    10,478.93x = 15,720.02 × 4,932.86
  4. Step 4: Simplify right side
    10,478.93x = 77,544,657.86
  5. Step 5: Solve for x
    x = 77,544,657.86/10,478.93
  6. Step 6: Final answer
    x = 7,400.05

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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.