Home / 15,270.06-21,074.04-8,555.65

Finding the Fourth Proportional to 15,270.06, 21,074.04 and 8,555.65

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Solution

The fourth proportional to 15,270.06, 21,074.04 and 8,555.65 is: 11,807.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,270.06 : 21,074.04 = 8,555.65 : x
  2. Step 2: Convert to fraction form
    15,270.06/21,074.04 = 8,555.65/x
  3. Step 3: Cross multiply
    15,270.06x = 21,074.04 × 8,555.65
  4. Step 4: Simplify right side
    15,270.06x = 180,302,057.64
  5. Step 5: Solve for x
    x = 180,302,057.64/15,270.06
  6. Step 6: Final answer
    x = 11,807.55

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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.