Home / 38,695.80-58,043.70-12,403.20

Finding the Fourth Proportional to 38,695.80, 58,043.70 and 12,403.20

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Solution

The fourth proportional to 38,695.80, 58,043.70 and 12,403.20 is: 18,604.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,695.80 : 58,043.70 = 12,403.20 : x
  2. Step 2: Convert to fraction form
    38,695.80/58,043.70 = 12,403.20/x
  3. Step 3: Cross multiply
    38,695.80x = 58,043.70 × 12,403.20
  4. Step 4: Simplify right side
    38,695.80x = 719,927,619.84
  5. Step 5: Solve for x
    x = 719,927,619.84/38,695.80
  6. Step 6: Final answer
    x = 18,604.80

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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.