Home / 21,681.28-32,521.45-9,994.49

Finding the Fourth Proportional to 21,681.28, 32,521.45 and 9,994.49

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Solution

The fourth proportional to 21,681.28, 32,521.45 and 9,994.49 is: 14,991.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,681.28 : 32,521.45 = 9,994.49 : x
  2. Step 2: Convert to fraction form
    21,681.28/32,521.45 = 9,994.49/x
  3. Step 3: Cross multiply
    21,681.28x = 32,521.45 × 9,994.49
  4. Step 4: Simplify right side
    21,681.28x = 325,035,306.81
  5. Step 5: Solve for x
    x = 325,035,306.81/21,681.28
  6. Step 6: Final answer
    x = 14,991.52

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.