Home / 15,478.02-21,359.61-8,404.47

Finding the Fourth Proportional to 15,478.02, 21,359.61 and 8,404.47

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Solution

The fourth proportional to 15,478.02, 21,359.61 and 8,404.47 is: 11,598.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,478.02 : 21,359.61 = 8,404.47 : x
  2. Step 2: Convert to fraction form
    15,478.02/21,359.61 = 8,404.47/x
  3. Step 3: Cross multiply
    15,478.02x = 21,359.61 × 8,404.47
  4. Step 4: Simplify right side
    15,478.02x = 179,516,201.46
  5. Step 5: Solve for x
    x = 179,516,201.46/15,478.02
  6. Step 6: Final answer
    x = 11,598.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.