Home / 18,415.28-25,413.04-10,031.76

Finding the Fourth Proportional to 18,415.28, 25,413.04 and 10,031.76

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Solution

The fourth proportional to 18,415.28, 25,413.04 and 10,031.76 is: 13,843.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.28 : 25,413.04 = 10,031.76 : x
  2. Step 2: Convert to fraction form
    18,415.28/25,413.04 = 10,031.76/x
  3. Step 3: Cross multiply
    18,415.28x = 25,413.04 × 10,031.76
  4. Step 4: Simplify right side
    18,415.28x = 254,937,518.15
  5. Step 5: Solve for x
    x = 254,937,518.15/18,415.28
  6. Step 6: Final answer
    x = 13,843.80

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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.