Home / 28,053.60-38,714.40-15,478.80

Finding the Fourth Proportional to 28,053.60, 38,714.40 and 15,478.80

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Solution

The fourth proportional to 28,053.60, 38,714.40 and 15,478.80 is: 21,360.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.60 : 38,714.40 = 15,478.80 : x
  2. Step 2: Convert to fraction form
    28,053.60/38,714.40 = 15,478.80/x
  3. Step 3: Cross multiply
    28,053.60x = 38,714.40 × 15,478.80
  4. Step 4: Simplify right side
    28,053.60x = 599,252,454.72
  5. Step 5: Solve for x
    x = 599,252,454.72/28,053.60
  6. Step 6: Final answer
    x = 21,360.98

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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.