Home / 15,038.02-20,753.18-8,665.56

Finding the Fourth Proportional to 15,038.02, 20,753.18 and 8,665.56

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Solution

The fourth proportional to 15,038.02, 20,753.18 and 8,665.56 is: 11,958.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,038.02 : 20,753.18 = 8,665.56 : x
  2. Step 2: Convert to fraction form
    15,038.02/20,753.18 = 8,665.56/x
  3. Step 3: Cross multiply
    15,038.02x = 20,753.18 × 8,665.56
  4. Step 4: Simplify right side
    15,038.02x = 179,837,913.81
  5. Step 5: Solve for x
    x = 179,837,913.81/15,038.02
  6. Step 6: Final answer
    x = 11,958.88

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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.