Home / 28,729.29-39,641.59-15,980.79

Finding the Fourth Proportional to 28,729.29, 39,641.59 and 15,980.79

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Solution

The fourth proportional to 28,729.29, 39,641.59 and 15,980.79 is: 22,050.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,729.29 : 39,641.59 = 15,980.79 : x
  2. Step 2: Convert to fraction form
    28,729.29/39,641.59 = 15,980.79/x
  3. Step 3: Cross multiply
    28,729.29x = 39,641.59 × 15,980.79
  4. Step 4: Simplify right side
    28,729.29x = 633,503,885.10
  5. Step 5: Solve for x
    x = 633,503,885.10/28,729.29
  6. Step 6: Final answer
    x = 22,050.80

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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.