Home / 15,461.30-21,320.52-13,230.56

Finding the Fourth Proportional to 15,461.30, 21,320.52 and 13,230.56

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Solution

The fourth proportional to 15,461.30, 21,320.52 and 13,230.56 is: 18,244.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,461.30 : 21,320.52 = 13,230.56 : x
  2. Step 2: Convert to fraction form
    15,461.30/21,320.52 = 13,230.56/x
  3. Step 3: Cross multiply
    15,461.30x = 21,320.52 × 13,230.56
  4. Step 4: Simplify right side
    15,461.30x = 282,082,419.09
  5. Step 5: Solve for x
    x = 282,082,419.09/15,461.30
  6. Step 6: Final answer
    x = 18,244.42

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Double scale
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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.