Home / 18,947.36-26,144.88-10,988.48

Finding the Fourth Proportional to 18,947.36, 26,144.88 and 10,988.48

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Solution

The fourth proportional to 18,947.36, 26,144.88 and 10,988.48 is: 15,162.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.36 : 26,144.88 = 10,988.48 : x
  2. Step 2: Convert to fraction form
    18,947.36/26,144.88 = 10,988.48/x
  3. Step 3: Cross multiply
    18,947.36x = 26,144.88 × 10,988.48
  4. Step 4: Simplify right side
    18,947.36x = 287,292,490.98
  5. Step 5: Solve for x
    x = 287,292,490.98/18,947.36
  6. Step 6: Final answer
    x = 15,162.67

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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.