Home / 18,947.70-26,140.50-10,988.46

Finding the Fourth Proportional to 18,947.70, 26,140.50 and 10,988.46

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Solution

The fourth proportional to 18,947.70, 26,140.50 and 10,988.46 is: 15,159.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,947.70 : 26,140.50 = 10,988.46 : x
  2. Step 2: Convert to fraction form
    18,947.70/26,140.50 = 10,988.46/x
  3. Step 3: Cross multiply
    18,947.70x = 26,140.50 × 10,988.46
  4. Step 4: Simplify right side
    18,947.70x = 287,243,838.63
  5. Step 5: Solve for x
    x = 287,243,838.63/18,947.70
  6. Step 6: Final answer
    x = 15,159.83

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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.