Home / 13,123.23-18,127.34-9,727.12

Finding the Fourth Proportional to 13,123.23, 18,127.34 and 9,727.12

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Solution

The fourth proportional to 13,123.23, 18,127.34 and 9,727.12 is: 13,436.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,123.23 : 18,127.34 = 9,727.12 : x
  2. Step 2: Convert to fraction form
    13,123.23/18,127.34 = 9,727.12/x
  3. Step 3: Cross multiply
    13,123.23x = 18,127.34 × 9,727.12
  4. Step 4: Simplify right side
    13,123.23x = 176,326,811.46
  5. Step 5: Solve for x
    x = 176,326,811.46/13,123.23
  6. Step 6: Final answer
    x = 13,436.24

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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.