Home / 27,890.96-38,487.36-15,316.40

Finding the Fourth Proportional to 27,890.96, 38,487.36 and 15,316.40

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Solution

The fourth proportional to 27,890.96, 38,487.36 and 15,316.40 is: 21,135.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,890.96 : 38,487.36 = 15,316.40 : x
  2. Step 2: Convert to fraction form
    27,890.96/38,487.36 = 15,316.40/x
  3. Step 3: Cross multiply
    27,890.96x = 38,487.36 × 15,316.40
  4. Step 4: Simplify right side
    27,890.96x = 589,487,800.70
  5. Step 5: Solve for x
    x = 589,487,800.70/27,890.96
  6. Step 6: Final answer
    x = 21,135.44

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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.