Home / 28,555.10-42,839.14-15,407.18

Finding the Fourth Proportional to 28,555.10, 42,839.14 and 15,407.18

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Solution

The fourth proportional to 28,555.10, 42,839.14 and 15,407.18 is: 23,114.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.10 : 42,839.14 = 15,407.18 : x
  2. Step 2: Convert to fraction form
    28,555.10/42,839.14 = 15,407.18/x
  3. Step 3: Cross multiply
    28,555.10x = 42,839.14 × 15,407.18
  4. Step 4: Simplify right side
    28,555.10x = 660,030,341.03
  5. Step 5: Solve for x
    x = 660,030,341.03/28,555.10
  6. Step 6: Final answer
    x = 23,114.27

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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.