Home / 15,246.78-21,047.76-11,471.40

Finding the Fourth Proportional to 15,246.78, 21,047.76 and 11,471.40

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Solution

The fourth proportional to 15,246.78, 21,047.76 and 11,471.40 is: 15,835.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,246.78 : 21,047.76 = 11,471.40 : x
  2. Step 2: Convert to fraction form
    15,246.78/21,047.76 = 11,471.40/x
  3. Step 3: Cross multiply
    15,246.78x = 21,047.76 × 11,471.40
  4. Step 4: Simplify right side
    15,246.78x = 241,447,274.06
  5. Step 5: Solve for x
    x = 241,447,274.06/15,246.78
  6. Step 6: Final answer
    x = 15,835.95

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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.