Home / 19,343.20-29,041.80-12,366.40

Finding the Fourth Proportional to 19,343.20, 29,041.80 and 12,366.40

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Solution

The fourth proportional to 19,343.20, 29,041.80 and 12,366.40 is: 18,566.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,343.20 : 29,041.80 = 12,366.40 : x
  2. Step 2: Convert to fraction form
    19,343.20/29,041.80 = 12,366.40/x
  3. Step 3: Cross multiply
    19,343.20x = 29,041.80 × 12,366.40
  4. Step 4: Simplify right side
    19,343.20x = 359,142,515.52
  5. Step 5: Solve for x
    x = 359,142,515.52/19,343.20
  6. Step 6: Final answer
    x = 18,566.86

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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.