Home / 25,413.28-38,123.80-8,778.12

Finding the Fourth Proportional to 25,413.28, 38,123.80 and 8,778.12

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Solution

The fourth proportional to 25,413.28, 38,123.80 and 8,778.12 is: 13,168.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,413.28 : 38,123.80 = 8,778.12 : x
  2. Step 2: Convert to fraction form
    25,413.28/38,123.80 = 8,778.12/x
  3. Step 3: Cross multiply
    25,413.28x = 38,123.80 × 8,778.12
  4. Step 4: Simplify right side
    25,413.28x = 334,655,291.26
  5. Step 5: Solve for x
    x = 334,655,291.26/25,413.28
  6. Step 6: Final answer
    x = 13,168.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.