Home / 15,427.20-23,140.80-15,281.40

Finding the Fourth Proportional to 15,427.20, 23,140.80 and 15,281.40

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Solution

The fourth proportional to 15,427.20, 23,140.80 and 15,281.40 is: 22,922.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,427.20 : 23,140.80 = 15,281.40 : x
  2. Step 2: Convert to fraction form
    15,427.20/23,140.80 = 15,281.40/x
  3. Step 3: Cross multiply
    15,427.20x = 23,140.80 × 15,281.40
  4. Step 4: Simplify right side
    15,427.20x = 353,623,821.12
  5. Step 5: Solve for x
    x = 353,623,821.12/15,427.20
  6. Step 6: Final answer
    x = 22,922.10

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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.