Home / 28,549.29-39,435.66-21,916.88

Finding the Fourth Proportional to 28,549.29, 39,435.66 and 21,916.88

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Solution

The fourth proportional to 28,549.29, 39,435.66 and 21,916.88 is: 30,274.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,549.29 : 39,435.66 = 21,916.88 : x
  2. Step 2: Convert to fraction form
    28,549.29/39,435.66 = 21,916.88/x
  3. Step 3: Cross multiply
    28,549.29x = 39,435.66 × 21,916.88
  4. Step 4: Simplify right side
    28,549.29x = 864,306,430.76
  5. Step 5: Solve for x
    x = 864,306,430.76/28,549.29
  6. Step 6: Final answer
    x = 30,274.18

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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.