Home / 40,439.40-60,648.30-12,359.40

Finding the Fourth Proportional to 40,439.40, 60,648.30 and 12,359.40

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Solution

The fourth proportional to 40,439.40, 60,648.30 and 12,359.40 is: 18,535.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,439.40 : 60,648.30 = 12,359.40 : x
  2. Step 2: Convert to fraction form
    40,439.40/60,648.30 = 12,359.40/x
  3. Step 3: Cross multiply
    40,439.40x = 60,648.30 × 12,359.40
  4. Step 4: Simplify right side
    40,439.40x = 749,576,599.02
  5. Step 5: Solve for x
    x = 749,576,599.02/40,439.40
  6. Step 6: Final answer
    x = 18,535.80

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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.