Home / 18,415.15-25,411.70-10,859.74

Finding the Fourth Proportional to 18,415.15, 25,411.70 and 10,859.74

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Solution

The fourth proportional to 18,415.15, 25,411.70 and 10,859.74 is: 14,985.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,415.15 : 25,411.70 = 10,859.74 : x
  2. Step 2: Convert to fraction form
    18,415.15/25,411.70 = 10,859.74/x
  3. Step 3: Cross multiply
    18,415.15x = 25,411.70 × 10,859.74
  4. Step 4: Simplify right side
    18,415.15x = 275,964,454.96
  5. Step 5: Solve for x
    x = 275,964,454.96/18,415.15
  6. Step 6: Final answer
    x = 14,985.73

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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.