Home / 28,434.40-42,651.60-19,103.20

Finding the Fourth Proportional to 28,434.40, 42,651.60 and 19,103.20

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Solution

The fourth proportional to 28,434.40, 42,651.60 and 19,103.20 is: 28,654.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,434.40 : 42,651.60 = 19,103.20 : x
  2. Step 2: Convert to fraction form
    28,434.40/42,651.60 = 19,103.20/x
  3. Step 3: Cross multiply
    28,434.40x = 42,651.60 × 19,103.20
  4. Step 4: Simplify right side
    28,434.40x = 814,782,045.12
  5. Step 5: Solve for x
    x = 814,782,045.12/28,434.40
  6. Step 6: Final answer
    x = 28,654.80

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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.