Home / 15,528.23-21,428.82-8,454.63

Finding the Fourth Proportional to 15,528.23, 21,428.82 and 8,454.63

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Solution

The fourth proportional to 15,528.23, 21,428.82 and 8,454.63 is: 11,667.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,528.23 : 21,428.82 = 8,454.63 : x
  2. Step 2: Convert to fraction form
    15,528.23/21,428.82 = 8,454.63/x
  3. Step 3: Cross multiply
    15,528.23x = 21,428.82 × 8,454.63
  4. Step 4: Simplify right side
    15,528.23x = 181,172,744.44
  5. Step 5: Solve for x
    x = 181,172,744.44/15,528.23
  6. Step 6: Final answer
    x = 11,667.32

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Half scale
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Double scale
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Similar ratio
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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.