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Finding the Fourth Proportional to 15,988.56, 23,986.08 and 6,128.16

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Solution

The fourth proportional to 15,988.56, 23,986.08 and 6,128.16 is: 9,193.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,988.56 : 23,986.08 = 6,128.16 : x
  2. Step 2: Convert to fraction form
    15,988.56/23,986.08 = 6,128.16/x
  3. Step 3: Cross multiply
    15,988.56x = 23,986.08 × 6,128.16
  4. Step 4: Simplify right side
    15,988.56x = 146,990,536.01
  5. Step 5: Solve for x
    x = 146,990,536.01/15,988.56
  6. Step 6: Final answer
    x = 9,193.48

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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.