Home / 15,160.61-20,921.11-8,445.89

Finding the Fourth Proportional to 15,160.61, 20,921.11 and 8,445.89

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Solution

The fourth proportional to 15,160.61, 20,921.11 and 8,445.89 is: 11,655.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,160.61 : 20,921.11 = 8,445.89 : x
  2. Step 2: Convert to fraction form
    15,160.61/20,921.11 = 8,445.89/x
  3. Step 3: Cross multiply
    15,160.61x = 20,921.11 × 8,445.89
  4. Step 4: Simplify right side
    15,160.61x = 176,697,268.02
  5. Step 5: Solve for x
    x = 176,697,268.02/15,160.61
  6. Step 6: Final answer
    x = 11,655.03

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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.