Home / 10,090.80-15,125.40-4,543.20

Finding the Fourth Proportional to 10,090.80, 15,125.40 and 4,543.20

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Solution

The fourth proportional to 10,090.80, 15,125.40 and 4,543.20 is: 6,809.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,090.80 : 15,125.40 = 4,543.20 : x
  2. Step 2: Convert to fraction form
    10,090.80/15,125.40 = 4,543.20/x
  3. Step 3: Cross multiply
    10,090.80x = 15,125.40 × 4,543.20
  4. Step 4: Simplify right side
    10,090.80x = 68,717,717.28
  5. Step 5: Solve for x
    x = 68,717,717.28/10,090.80
  6. Step 6: Final answer
    x = 6,809.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.