Home / 28,844.30-39,746.08-21,278.68

Finding the Fourth Proportional to 28,844.30, 39,746.08 and 21,278.68

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Solution

The fourth proportional to 28,844.30, 39,746.08 and 21,278.68 is: 29,321.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,844.30 : 39,746.08 = 21,278.68 : x
  2. Step 2: Convert to fraction form
    28,844.30/39,746.08 = 21,278.68/x
  3. Step 3: Cross multiply
    28,844.30x = 39,746.08 × 21,278.68
  4. Step 4: Simplify right side
    28,844.30x = 845,744,117.57
  5. Step 5: Solve for x
    x = 845,744,117.57/28,844.30
  6. Step 6: Final answer
    x = 29,321.01

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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.