Home / 28,240.65-42,347.30-8,515.53

Finding the Fourth Proportional to 28,240.65, 42,347.30 and 8,515.53

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Solution

The fourth proportional to 28,240.65, 42,347.30 and 8,515.53 is: 12,769.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,240.65 : 42,347.30 = 8,515.53 : x
  2. Step 2: Convert to fraction form
    28,240.65/42,347.30 = 8,515.53/x
  3. Step 3: Cross multiply
    28,240.65x = 42,347.30 × 8,515.53
  4. Step 4: Simplify right side
    28,240.65x = 360,609,660.99
  5. Step 5: Solve for x
    x = 360,609,660.99/28,240.65
  6. Step 6: Final answer
    x = 12,769.17

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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.