Home / 28,631.84-42,948.96-7,855.04

Finding the Fourth Proportional to 28,631.84, 42,948.96 and 7,855.04

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Solution

The fourth proportional to 28,631.84, 42,948.96 and 7,855.04 is: 11,782.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,631.84 : 42,948.96 = 7,855.04 : x
  2. Step 2: Convert to fraction form
    28,631.84/42,948.96 = 7,855.04/x
  3. Step 3: Cross multiply
    28,631.84x = 42,948.96 × 7,855.04
  4. Step 4: Simplify right side
    28,631.84x = 337,365,798.76
  5. Step 5: Solve for x
    x = 337,365,798.76/28,631.84
  6. Step 6: Final answer
    x = 11,782.89

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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.