Home / 15,123.65-20,810.82-13,708.95

Finding the Fourth Proportional to 15,123.65, 20,810.82 and 13,708.95

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Solution

The fourth proportional to 15,123.65, 20,810.82 and 13,708.95 is: 18,864.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,123.65 : 20,810.82 = 13,708.95 : x
  2. Step 2: Convert to fraction form
    15,123.65/20,810.82 = 13,708.95/x
  3. Step 3: Cross multiply
    15,123.65x = 20,810.82 × 13,708.95
  4. Step 4: Simplify right side
    15,123.65x = 285,294,464.21
  5. Step 5: Solve for x
    x = 285,294,464.21/15,123.65
  6. Step 6: Final answer
    x = 18,864.13

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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.