Home / 15,535.47-21,438.07-9,162.33

Finding the Fourth Proportional to 15,535.47, 21,438.07 and 9,162.33

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Solution

The fourth proportional to 15,535.47, 21,438.07 and 9,162.33 is: 12,643.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,535.47 : 21,438.07 = 9,162.33 : x
  2. Step 2: Convert to fraction form
    15,535.47/21,438.07 = 9,162.33/x
  3. Step 3: Cross multiply
    15,535.47x = 21,438.07 × 9,162.33
  4. Step 4: Simplify right side
    15,535.47x = 196,422,734.41
  5. Step 5: Solve for x
    x = 196,422,734.41/15,535.47
  6. Step 6: Final answer
    x = 12,643.50

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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.