Home / 25,990.46-38,985.70-8,460.29

Finding the Fourth Proportional to 25,990.46, 38,985.70 and 8,460.29

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Solution

The fourth proportional to 25,990.46, 38,985.70 and 8,460.29 is: 12,690.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,990.46 : 38,985.70 = 8,460.29 : x
  2. Step 2: Convert to fraction form
    25,990.46/38,985.70 = 8,460.29/x
  3. Step 3: Cross multiply
    25,990.46x = 38,985.70 × 8,460.29
  4. Step 4: Simplify right side
    25,990.46x = 329,830,327.85
  5. Step 5: Solve for x
    x = 329,830,327.85/25,990.46
  6. Step 6: Final answer
    x = 12,690.44

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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.