Home / 19,728.57-29,605.80-7,248.70

Finding the Fourth Proportional to 19,728.57, 29,605.80 and 7,248.70

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Solution

The fourth proportional to 19,728.57, 29,605.80 and 7,248.70 is: 10,877.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,728.57 : 29,605.80 = 7,248.70 : x
  2. Step 2: Convert to fraction form
    19,728.57/29,605.80 = 7,248.70/x
  3. Step 3: Cross multiply
    19,728.57x = 29,605.80 × 7,248.70
  4. Step 4: Simplify right side
    19,728.57x = 214,603,488.45
  5. Step 5: Solve for x
    x = 214,603,488.45/19,728.57
  6. Step 6: Final answer
    x = 10,877.80

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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.