Home / 19,925.11-27,507.23-15,438.79

Finding the Fourth Proportional to 19,925.11, 27,507.23 and 15,438.79

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Solution

The fourth proportional to 19,925.11, 27,507.23 and 15,438.79 is: 21,313.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,925.11 : 27,507.23 = 15,438.79 : x
  2. Step 2: Convert to fraction form
    19,925.11/27,507.23 = 15,438.79/x
  3. Step 3: Cross multiply
    19,925.11x = 27,507.23 × 15,438.79
  4. Step 4: Simplify right side
    19,925.11x = 424,678,347.45
  5. Step 5: Solve for x
    x = 424,678,347.45/19,925.11
  6. Step 6: Final answer
    x = 21,313.73

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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.