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Finding the Fourth Proportional to 28,053.84, 38,714.04 and 15,478.68

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Solution

The fourth proportional to 28,053.84, 38,714.04 and 15,478.68 is: 21,360.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,053.84 : 38,714.04 = 15,478.68 : x
  2. Step 2: Convert to fraction form
    28,053.84/38,714.04 = 15,478.68/x
  3. Step 3: Cross multiply
    28,053.84x = 38,714.04 × 15,478.68
  4. Step 4: Simplify right side
    28,053.84x = 599,242,236.67
  5. Step 5: Solve for x
    x = 599,242,236.67/28,053.84
  6. Step 6: Final answer
    x = 21,360.44

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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.