Home / 15,030.80-20,740.91-8,316.26

Finding the Fourth Proportional to 15,030.80, 20,740.91 and 8,316.26

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Solution

The fourth proportional to 15,030.80, 20,740.91 and 8,316.26 is: 11,475.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,030.80 : 20,740.91 = 8,316.26 : x
  2. Step 2: Convert to fraction form
    15,030.80/20,740.91 = 8,316.26/x
  3. Step 3: Cross multiply
    15,030.80x = 20,740.91 × 8,316.26
  4. Step 4: Simplify right side
    15,030.80x = 172,486,654.91
  5. Step 5: Solve for x
    x = 172,486,654.91/15,030.80
  6. Step 6: Final answer
    x = 11,475.55

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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.