Home / 28,666.92-39,560.74-15,920.93

Finding the Fourth Proportional to 28,666.92, 39,560.74 and 15,920.93

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Solution

The fourth proportional to 28,666.92, 39,560.74 and 15,920.93 is: 21,971.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,666.92 : 39,560.74 = 15,920.93 : x
  2. Step 2: Convert to fraction form
    28,666.92/39,560.74 = 15,920.93/x
  3. Step 3: Cross multiply
    28,666.92x = 39,560.74 × 15,920.93
  4. Step 4: Simplify right side
    28,666.92x = 629,843,693.29
  5. Step 5: Solve for x
    x = 629,843,693.29/28,666.92
  6. Step 6: Final answer
    x = 21,971.10

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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.