Home / 25,019.45-34,525.85-13,688.66

Finding the Fourth Proportional to 25,019.45, 34,525.85 and 13,688.66

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Solution

The fourth proportional to 25,019.45, 34,525.85 and 13,688.66 is: 18,889.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,019.45 : 34,525.85 = 13,688.66 : x
  2. Step 2: Convert to fraction form
    25,019.45/34,525.85 = 13,688.66/x
  3. Step 3: Cross multiply
    25,019.45x = 34,525.85 × 13,688.66
  4. Step 4: Simplify right side
    25,019.45x = 472,612,639.73
  5. Step 5: Solve for x
    x = 472,612,639.73/25,019.45
  6. Step 6: Final answer
    x = 18,889.81

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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.