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Finding the Fourth Proportional to 15,989.34, 23,990.94 and 8,585.16

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Solution

The fourth proportional to 15,989.34, 23,990.94 and 8,585.16 is: 12,881.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,989.34 : 23,990.94 = 8,585.16 : x
  2. Step 2: Convert to fraction form
    15,989.34/23,990.94 = 8,585.16/x
  3. Step 3: Cross multiply
    15,989.34x = 23,990.94 × 8,585.16
  4. Step 4: Simplify right side
    15,989.34x = 205,966,058.45
  5. Step 5: Solve for x
    x = 205,966,058.45/15,989.34
  6. Step 6: Final answer
    x = 12,881.46

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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.