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Finding the Fourth Proportional to 15,021.06, 20,731.59 and 8,737.08

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Solution

The fourth proportional to 15,021.06, 20,731.59 and 8,737.08 is: 12,058.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,021.06 : 20,731.59 = 8,737.08 : x
  2. Step 2: Convert to fraction form
    15,021.06/20,731.59 = 8,737.08/x
  3. Step 3: Cross multiply
    15,021.06x = 20,731.59 × 8,737.08
  4. Step 4: Simplify right side
    15,021.06x = 181,133,560.36
  5. Step 5: Solve for x
    x = 181,133,560.36/15,021.06
  6. Step 6: Final answer
    x = 12,058.64

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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.