Home / 19,964.40-29,946.60-12,577.20

Finding the Fourth Proportional to 19,964.40, 29,946.60 and 12,577.20

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Solution

The fourth proportional to 19,964.40, 29,946.60 and 12,577.20 is: 18,865.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,964.40 : 29,946.60 = 12,577.20 : x
  2. Step 2: Convert to fraction form
    19,964.40/29,946.60 = 12,577.20/x
  3. Step 3: Cross multiply
    19,964.40x = 29,946.60 × 12,577.20
  4. Step 4: Simplify right side
    19,964.40x = 376,644,377.52
  5. Step 5: Solve for x
    x = 376,644,377.52/19,964.40
  6. Step 6: Final answer
    x = 18,865.80

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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.