Home / 28,054.04-38,712.90-15,478.76

Finding the Fourth Proportional to 28,054.04, 38,712.90 and 15,478.76

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Solution

The fourth proportional to 28,054.04, 38,712.90 and 15,478.76 is: 21,359.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,054.04 : 38,712.90 = 15,478.76 : x
  2. Step 2: Convert to fraction form
    28,054.04/38,712.90 = 15,478.76/x
  3. Step 3: Cross multiply
    28,054.04x = 38,712.90 × 15,478.76
  4. Step 4: Simplify right side
    28,054.04x = 599,227,688.00
  5. Step 5: Solve for x
    x = 599,227,688.00/28,054.04
  6. Step 6: Final answer
    x = 21,359.76

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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.