Home / 9,420.59-13,001.45-5,387.79

Finding the Fourth Proportional to 9,420.59, 13,001.45 and 5,387.79

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Solution

The fourth proportional to 9,420.59, 13,001.45 and 5,387.79 is: 7,435.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,420.59 : 13,001.45 = 5,387.79 : x
  2. Step 2: Convert to fraction form
    9,420.59/13,001.45 = 5,387.79/x
  3. Step 3: Cross multiply
    9,420.59x = 13,001.45 × 5,387.79
  4. Step 4: Simplify right side
    9,420.59x = 70,049,114.80
  5. Step 5: Solve for x
    x = 70,049,114.80/9,420.59
  6. Step 6: Final answer
    x = 7,435.74

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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.