Home / 15,394.40-21,244.14-8,320.76

Finding the Fourth Proportional to 15,394.40, 21,244.14 and 8,320.76

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Solution

The fourth proportional to 15,394.40, 21,244.14 and 8,320.76 is: 11,482.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,394.40 : 21,244.14 = 8,320.76 : x
  2. Step 2: Convert to fraction form
    15,394.40/21,244.14 = 8,320.76/x
  3. Step 3: Cross multiply
    15,394.40x = 21,244.14 × 8,320.76
  4. Step 4: Simplify right side
    15,394.40x = 176,767,390.35
  5. Step 5: Solve for x
    x = 176,767,390.35/15,394.40
  6. Step 6: Final answer
    x = 11,482.58

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Half scale
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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.