Home / 28,690.80-39,592.51-15,943.66

Finding the Fourth Proportional to 28,690.80, 39,592.51 and 15,943.66

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Solution

The fourth proportional to 28,690.80, 39,592.51 and 15,943.66 is: 22,001.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,690.80 : 39,592.51 = 15,943.66 : x
  2. Step 2: Convert to fraction form
    28,690.80/39,592.51 = 15,943.66/x
  3. Step 3: Cross multiply
    28,690.80x = 39,592.51 × 15,943.66
  4. Step 4: Simplify right side
    28,690.80x = 631,249,379.15
  5. Step 5: Solve for x
    x = 631,249,379.15/28,690.80
  6. Step 6: Final answer
    x = 22,001.81

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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.