Home / 15,320.70-21,140.26-8,605.04

Finding the Fourth Proportional to 15,320.70, 21,140.26 and 8,605.04

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Solution

The fourth proportional to 15,320.70, 21,140.26 and 8,605.04 is: 11,873.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,320.70 : 21,140.26 = 8,605.04 : x
  2. Step 2: Convert to fraction form
    15,320.70/21,140.26 = 8,605.04/x
  3. Step 3: Cross multiply
    15,320.70x = 21,140.26 × 8,605.04
  4. Step 4: Simplify right side
    15,320.70x = 181,912,730.06
  5. Step 5: Solve for x
    x = 181,912,730.06/15,320.70
  6. Step 6: Final answer
    x = 11,873.66

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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.