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Finding the Fourth Proportional to 18,510.63, 25,545.03 and 10,127.31

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Solution

The fourth proportional to 18,510.63, 25,545.03 and 10,127.31 is: 13,975.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,510.63 : 25,545.03 = 10,127.31 : x
  2. Step 2: Convert to fraction form
    18,510.63/25,545.03 = 10,127.31/x
  3. Step 3: Cross multiply
    18,510.63x = 25,545.03 × 10,127.31
  4. Step 4: Simplify right side
    18,510.63x = 258,702,437.77
  5. Step 5: Solve for x
    x = 258,702,437.77/18,510.63
  6. Step 6: Final answer
    x = 13,975.89

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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.