Home / 15,386.72-23,080.08-7,987.36

Finding the Fourth Proportional to 15,386.72, 23,080.08 and 7,987.36

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Solution

The fourth proportional to 15,386.72, 23,080.08 and 7,987.36 is: 11,981.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,386.72 : 23,080.08 = 7,987.36 : x
  2. Step 2: Convert to fraction form
    15,386.72/23,080.08 = 7,987.36/x
  3. Step 3: Cross multiply
    15,386.72x = 23,080.08 × 7,987.36
  4. Step 4: Simplify right side
    15,386.72x = 184,348,907.79
  5. Step 5: Solve for x
    x = 184,348,907.79/15,386.72
  6. Step 6: Final answer
    x = 11,981.04

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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.