Home / 25,868.28-35,698.21-15,120.55

Finding the Fourth Proportional to 25,868.28, 35,698.21 and 15,120.55

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Solution

The fourth proportional to 25,868.28, 35,698.21 and 15,120.55 is: 20,866.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,868.28 : 35,698.21 = 15,120.55 : x
  2. Step 2: Convert to fraction form
    25,868.28/35,698.21 = 15,120.55/x
  3. Step 3: Cross multiply
    25,868.28x = 35,698.21 × 15,120.55
  4. Step 4: Simplify right side
    25,868.28x = 539,776,569.22
  5. Step 5: Solve for x
    x = 539,776,569.22/25,868.28
  6. Step 6: Final answer
    x = 20,866.35

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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.