Home / 15,387.64-23,088.66-7,988.08

Finding the Fourth Proportional to 15,387.64, 23,088.66 and 7,988.08

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Solution

The fourth proportional to 15,387.64, 23,088.66 and 7,988.08 is: 11,985.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,387.64 : 23,088.66 = 7,988.08 : x
  2. Step 2: Convert to fraction form
    15,387.64/23,088.66 = 7,988.08/x
  3. Step 3: Cross multiply
    15,387.64x = 23,088.66 × 7,988.08
  4. Step 4: Simplify right side
    15,387.64x = 184,434,063.17
  5. Step 5: Solve for x
    x = 184,434,063.17/15,387.64
  6. Step 6: Final answer
    x = 11,985.86

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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.