Home / 15,367.95-21,210.71-9,628.07

Finding the Fourth Proportional to 15,367.95, 21,210.71 and 9,628.07

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Solution

The fourth proportional to 15,367.95, 21,210.71 and 9,628.07 is: 13,288.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,367.95 : 21,210.71 = 9,628.07 : x
  2. Step 2: Convert to fraction form
    15,367.95/21,210.71 = 9,628.07/x
  3. Step 3: Cross multiply
    15,367.95x = 21,210.71 × 9,628.07
  4. Step 4: Simplify right side
    15,367.95x = 204,218,046.44
  5. Step 5: Solve for x
    x = 204,218,046.44/15,367.95
  6. Step 6: Final answer
    x = 13,288.57

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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.