Home / 28,052.32-38,714.88-20,966.40

Finding the Fourth Proportional to 28,052.32, 38,714.88 and 20,966.40

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Solution

The fourth proportional to 28,052.32, 38,714.88 and 20,966.40 is: 28,935.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,052.32 : 38,714.88 = 20,966.40 : x
  2. Step 2: Convert to fraction form
    28,052.32/38,714.88 = 20,966.40/x
  3. Step 3: Cross multiply
    28,052.32x = 38,714.88 × 20,966.40
  4. Step 4: Simplify right side
    28,052.32x = 811,711,660.03
  5. Step 5: Solve for x
    x = 811,711,660.03/28,052.32
  6. Step 6: Final answer
    x = 28,935.63

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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.