Home / 28,631.72-42,956.46-8,913.08

Finding the Fourth Proportional to 28,631.72, 42,956.46 and 8,913.08

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Solution

The fourth proportional to 28,631.72, 42,956.46 and 8,913.08 is: 13,372.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.72 : 42,956.46 = 8,913.08 : x
  2. Step 2: Convert to fraction form
    28,631.72/42,956.46 = 8,913.08/x
  3. Step 3: Cross multiply
    28,631.72x = 42,956.46 × 8,913.08
  4. Step 4: Simplify right side
    28,631.72x = 382,874,364.50
  5. Step 5: Solve for x
    x = 382,874,364.50/28,631.72
  6. Step 6: Final answer
    x = 13,372.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.