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Finding the Fourth Proportional to 15,219.20, 22,828.48 and 7,011.20

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Solution

The fourth proportional to 15,219.20, 22,828.48 and 7,011.20 is: 10,516.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,219.20 : 22,828.48 = 7,011.20 : x
  2. Step 2: Convert to fraction form
    15,219.20/22,828.48 = 7,011.20/x
  3. Step 3: Cross multiply
    15,219.20x = 22,828.48 × 7,011.20
  4. Step 4: Simplify right side
    15,219.20x = 160,055,038.98
  5. Step 5: Solve for x
    x = 160,055,038.98/15,219.20
  6. Step 6: Final answer
    x = 10,516.65

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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.