Home / 25,869.47-35,709.63-15,117.85

Finding the Fourth Proportional to 25,869.47, 35,709.63 and 15,117.85

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Solution

The fourth proportional to 25,869.47, 35,709.63 and 15,117.85 is: 20,868.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,869.47 : 35,709.63 = 15,117.85 : x
  2. Step 2: Convert to fraction form
    25,869.47/35,709.63 = 15,117.85/x
  3. Step 3: Cross multiply
    25,869.47x = 35,709.63 × 15,117.85
  4. Step 4: Simplify right side
    25,869.47x = 539,852,683.93
  5. Step 5: Solve for x
    x = 539,852,683.93/25,869.47
  6. Step 6: Final answer
    x = 20,868.33

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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.