Home / 20,510.08-30,743.52-10,638.88

Finding the Fourth Proportional to 20,510.08, 30,743.52 and 10,638.88

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Solution

The fourth proportional to 20,510.08, 30,743.52 and 10,638.88 is: 15,947.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,510.08 : 30,743.52 = 10,638.88 : x
  2. Step 2: Convert to fraction form
    20,510.08/30,743.52 = 10,638.88/x
  3. Step 3: Cross multiply
    20,510.08x = 30,743.52 × 10,638.88
  4. Step 4: Simplify right side
    20,510.08x = 327,076,620.06
  5. Step 5: Solve for x
    x = 327,076,620.06/20,510.08
  6. Step 6: Final answer
    x = 15,947.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.