Home / 19,928.57-29,911.28-10,074.76

Finding the Fourth Proportional to 19,928.57, 29,911.28 and 10,074.76

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Solution

The fourth proportional to 19,928.57, 29,911.28 and 10,074.76 is: 15,121.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,928.57 : 29,911.28 = 10,074.76 : x
  2. Step 2: Convert to fraction form
    19,928.57/29,911.28 = 10,074.76/x
  3. Step 3: Cross multiply
    19,928.57x = 29,911.28 × 10,074.76
  4. Step 4: Simplify right side
    19,928.57x = 301,348,842.14
  5. Step 5: Solve for x
    x = 301,348,842.14/19,928.57
  6. Step 6: Final answer
    x = 15,121.45

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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.