Home / 25,151.81-34,707.09-15,078.38

Finding the Fourth Proportional to 25,151.81, 34,707.09 and 15,078.38

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Solution

The fourth proportional to 25,151.81, 34,707.09 and 15,078.38 is: 20,806.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,151.81 : 34,707.09 = 15,078.38 : x
  2. Step 2: Convert to fraction form
    25,151.81/34,707.09 = 15,078.38/x
  3. Step 3: Cross multiply
    25,151.81x = 34,707.09 × 15,078.38
  4. Step 4: Simplify right side
    25,151.81x = 523,326,518.18
  5. Step 5: Solve for x
    x = 523,326,518.18/25,151.81
  6. Step 6: Final answer
    x = 20,806.72

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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.