Home / 10,220.80-15,323.41-5,287.29

Finding the Fourth Proportional to 10,220.80, 15,323.41 and 5,287.29

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Solution

The fourth proportional to 10,220.80, 15,323.41 and 5,287.29 is: 7,926.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,220.80 : 15,323.41 = 5,287.29 : x
  2. Step 2: Convert to fraction form
    10,220.80/15,323.41 = 5,287.29/x
  3. Step 3: Cross multiply
    10,220.80x = 15,323.41 × 5,287.29
  4. Step 4: Simplify right side
    10,220.80x = 81,019,312.46
  5. Step 5: Solve for x
    x = 81,019,312.46/10,220.80
  6. Step 6: Final answer
    x = 7,926.91

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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.