Home / 15,417.68-21,278.75-11,187.95

Finding the Fourth Proportional to 15,417.68, 21,278.75 and 11,187.95

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Solution

The fourth proportional to 15,417.68, 21,278.75 and 11,187.95 is: 15,441.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,417.68 : 21,278.75 = 11,187.95 : x
  2. Step 2: Convert to fraction form
    15,417.68/21,278.75 = 11,187.95/x
  3. Step 3: Cross multiply
    15,417.68x = 21,278.75 × 11,187.95
  4. Step 4: Simplify right side
    15,417.68x = 238,065,428.73
  5. Step 5: Solve for x
    x = 238,065,428.73/15,417.68
  6. Step 6: Final answer
    x = 15,441.07

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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.