Home / 28,759.79-39,688.12-16,661.91

Finding the Fourth Proportional to 28,759.79, 39,688.12 and 16,661.91

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Solution

The fourth proportional to 28,759.79, 39,688.12 and 16,661.91 is: 22,993.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,759.79 : 39,688.12 = 16,661.91 : x
  2. Step 2: Convert to fraction form
    28,759.79/39,688.12 = 16,661.91/x
  3. Step 3: Cross multiply
    28,759.79x = 39,688.12 × 16,661.91
  4. Step 4: Simplify right side
    28,759.79x = 661,280,053.17
  5. Step 5: Solve for x
    x = 661,280,053.17/28,759.79
  6. Step 6: Final answer
    x = 22,993.22

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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.