Home / 14,160.20-19,541.08-7,872.56

Finding the Fourth Proportional to 14,160.20, 19,541.08 and 7,872.56

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Solution

The fourth proportional to 14,160.20, 19,541.08 and 7,872.56 is: 10,864.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,160.20 : 19,541.08 = 7,872.56 : x
  2. Step 2: Convert to fraction form
    14,160.20/19,541.08 = 7,872.56/x
  3. Step 3: Cross multiply
    14,160.20x = 19,541.08 × 7,872.56
  4. Step 4: Simplify right side
    14,160.20x = 153,838,324.76
  5. Step 5: Solve for x
    x = 153,838,324.76/14,160.20
  6. Step 6: Final answer
    x = 10,864.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.