Home / 15,365.23-21,205.61-9,400.87

Finding the Fourth Proportional to 15,365.23, 21,205.61 and 9,400.87

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Solution

The fourth proportional to 15,365.23, 21,205.61 and 9,400.87 is: 12,974.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,365.23 : 21,205.61 = 9,400.87 : x
  2. Step 2: Convert to fraction form
    15,365.23/21,205.61 = 9,400.87/x
  3. Step 3: Cross multiply
    15,365.23x = 21,205.61 × 9,400.87
  4. Step 4: Simplify right side
    15,365.23x = 199,351,182.88
  5. Step 5: Solve for x
    x = 199,351,182.88/15,365.23
  6. Step 6: Final answer
    x = 12,974.17

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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.