Home / 25,790.80-38,690.20-10,999.76

Finding the Fourth Proportional to 25,790.80, 38,690.20 and 10,999.76

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Solution

The fourth proportional to 25,790.80, 38,690.20 and 10,999.76 is: 16,501.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,790.80 : 38,690.20 = 10,999.76 : x
  2. Step 2: Convert to fraction form
    25,790.80/38,690.20 = 10,999.76/x
  3. Step 3: Cross multiply
    25,790.80x = 38,690.20 × 10,999.76
  4. Step 4: Simplify right side
    25,790.80x = 425,582,914.35
  5. Step 5: Solve for x
    x = 425,582,914.35/25,790.80
  6. Step 6: Final answer
    x = 16,501.35

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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.