Home / 28,559.86-39,411.31-15,812.15

Finding the Fourth Proportional to 28,559.86, 39,411.31 and 15,812.15

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Solution

The fourth proportional to 28,559.86, 39,411.31 and 15,812.15 is: 21,820.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,559.86 : 39,411.31 = 15,812.15 : x
  2. Step 2: Convert to fraction form
    28,559.86/39,411.31 = 15,812.15/x
  3. Step 3: Cross multiply
    28,559.86x = 39,411.31 × 15,812.15
  4. Step 4: Simplify right side
    28,559.86x = 623,177,338.48
  5. Step 5: Solve for x
    x = 623,177,338.48/28,559.86
  6. Step 6: Final answer
    x = 21,820.04

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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.