Home / 10,021.57-13,830.80-5,772.79

Finding the Fourth Proportional to 10,021.57, 13,830.80 and 5,772.79

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Solution

The fourth proportional to 10,021.57, 13,830.80 and 5,772.79 is: 7,967.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,021.57 : 13,830.80 = 5,772.79 : x
  2. Step 2: Convert to fraction form
    10,021.57/13,830.80 = 5,772.79/x
  3. Step 3: Cross multiply
    10,021.57x = 13,830.80 × 5,772.79
  4. Step 4: Simplify right side
    10,021.57x = 79,842,363.73
  5. Step 5: Solve for x
    x = 79,842,363.73/10,021.57
  6. Step 6: Final answer
    x = 7,967.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.