Home / 20,725.02-28,611.90-15,432.48

Finding the Fourth Proportional to 20,725.02, 28,611.90 and 15,432.48

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Solution

The fourth proportional to 20,725.02, 28,611.90 and 15,432.48 is: 21,305.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,725.02 : 28,611.90 = 15,432.48 : x
  2. Step 2: Convert to fraction form
    20,725.02/28,611.90 = 15,432.48/x
  3. Step 3: Cross multiply
    20,725.02x = 28,611.90 × 15,432.48
  4. Step 4: Simplify right side
    20,725.02x = 441,552,574.51
  5. Step 5: Solve for x
    x = 441,552,574.51/20,725.02
  6. Step 6: Final answer
    x = 21,305.29

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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.