Home / 28,154.10-42,228.72-8,437.08

Finding the Fourth Proportional to 28,154.10, 42,228.72 and 8,437.08

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Solution

The fourth proportional to 28,154.10, 42,228.72 and 8,437.08 is: 12,654.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,154.10 : 42,228.72 = 8,437.08 : x
  2. Step 2: Convert to fraction form
    28,154.10/42,228.72 = 8,437.08/x
  3. Step 3: Cross multiply
    28,154.10x = 42,228.72 × 8,437.08
  4. Step 4: Simplify right side
    28,154.10x = 356,287,088.94
  5. Step 5: Solve for x
    x = 356,287,088.94/28,154.10
  6. Step 6: Final answer
    x = 12,654.89

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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.