Home / 28,080.50-38,725.74-18,513.59

Finding the Fourth Proportional to 28,080.50, 38,725.74 and 18,513.59

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Solution

The fourth proportional to 28,080.50, 38,725.74 and 18,513.59 is: 25,532.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,080.50 : 38,725.74 = 18,513.59 : x
  2. Step 2: Convert to fraction form
    28,080.50/38,725.74 = 18,513.59/x
  3. Step 3: Cross multiply
    28,080.50x = 38,725.74 × 18,513.59
  4. Step 4: Simplify right side
    28,080.50x = 716,952,279.18
  5. Step 5: Solve for x
    x = 716,952,279.18/28,080.50
  6. Step 6: Final answer
    x = 25,532.04

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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.