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Finding the Fourth Proportional to 15,607.54, 21,540.29 and 8,802.85

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Solution

The fourth proportional to 15,607.54, 21,540.29 and 8,802.85 is: 12,149.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,607.54 : 21,540.29 = 8,802.85 : x
  2. Step 2: Convert to fraction form
    15,607.54/21,540.29 = 8,802.85/x
  3. Step 3: Cross multiply
    15,607.54x = 21,540.29 × 8,802.85
  4. Step 4: Simplify right side
    15,607.54x = 189,615,941.83
  5. Step 5: Solve for x
    x = 189,615,941.83/15,607.54
  6. Step 6: Final answer
    x = 12,149.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.