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Finding the Fourth Proportional to 15,386.25, 23,062.86 and 7,988.88

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Solution

The fourth proportional to 15,386.25, 23,062.86 and 7,988.88 is: 11,974.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.25 : 23,062.86 = 7,988.88 : x
  2. Step 2: Convert to fraction form
    15,386.25/23,062.86 = 7,988.88/x
  3. Step 3: Cross multiply
    15,386.25x = 23,062.86 × 7,988.88
  4. Step 4: Simplify right side
    15,386.25x = 184,246,421.00
  5. Step 5: Solve for x
    x = 184,246,421.00/15,386.25
  6. Step 6: Final answer
    x = 11,974.75

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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.