Home / 28,966.68-39,971.52-16,865.28

Finding the Fourth Proportional to 28,966.68, 39,971.52 and 16,865.28

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Solution

The fourth proportional to 28,966.68, 39,971.52 and 16,865.28 is: 23,272.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,966.68 : 39,971.52 = 16,865.28 : x
  2. Step 2: Convert to fraction form
    28,966.68/39,971.52 = 16,865.28/x
  3. Step 3: Cross multiply
    28,966.68x = 39,971.52 × 16,865.28
  4. Step 4: Simplify right side
    28,966.68x = 674,130,876.83
  5. Step 5: Solve for x
    x = 674,130,876.83/28,966.68
  6. Step 6: Final answer
    x = 23,272.63

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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.