Home / 25,649.80-38,478.70-8,117.96

Finding the Fourth Proportional to 25,649.80, 38,478.70 and 8,117.96

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Solution

The fourth proportional to 25,649.80, 38,478.70 and 8,117.96 is: 12,178.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,649.80 : 38,478.70 = 8,117.96 : x
  2. Step 2: Convert to fraction form
    25,649.80/38,478.70 = 8,117.96/x
  3. Step 3: Cross multiply
    25,649.80x = 38,478.70 × 8,117.96
  4. Step 4: Simplify right side
    25,649.80x = 312,368,547.45
  5. Step 5: Solve for x
    x = 312,368,547.45/25,649.80
  6. Step 6: Final answer
    x = 12,178.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.