Home / 28,228.62-38,956.92-15,653.40

Finding the Fourth Proportional to 28,228.62, 38,956.92 and 15,653.40

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Solution

The fourth proportional to 28,228.62, 38,956.92 and 15,653.40 is: 21,602.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,228.62 : 38,956.92 = 15,653.40 : x
  2. Step 2: Convert to fraction form
    28,228.62/38,956.92 = 15,653.40/x
  3. Step 3: Cross multiply
    28,228.62x = 38,956.92 × 15,653.40
  4. Step 4: Simplify right side
    28,228.62x = 609,808,251.53
  5. Step 5: Solve for x
    x = 609,808,251.53/28,228.62
  6. Step 6: Final answer
    x = 21,602.48

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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.