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Finding the Fourth Proportional to 15,075.20, 22,612.80 and 6,867.20

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Solution

The fourth proportional to 15,075.20, 22,612.80 and 6,867.20 is: 10,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,075.20 : 22,612.80 = 6,867.20 : x
  2. Step 2: Convert to fraction form
    15,075.20/22,612.80 = 6,867.20/x
  3. Step 3: Cross multiply
    15,075.20x = 22,612.80 × 6,867.20
  4. Step 4: Simplify right side
    15,075.20x = 155,286,620.16
  5. Step 5: Solve for x
    x = 155,286,620.16/15,075.20
  6. Step 6: Final answer
    x = 10,300.80

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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.