Home / 20,271.10-30,406.65-13,272.70

Finding the Fourth Proportional to 20,271.10, 30,406.65 and 13,272.70

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Solution

The fourth proportional to 20,271.10, 30,406.65 and 13,272.70 is: 19,909.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,271.10 : 30,406.65 = 13,272.70 : x
  2. Step 2: Convert to fraction form
    20,271.10/30,406.65 = 13,272.70/x
  3. Step 3: Cross multiply
    20,271.10x = 30,406.65 × 13,272.70
  4. Step 4: Simplify right side
    20,271.10x = 403,578,343.46
  5. Step 5: Solve for x
    x = 403,578,343.46/20,271.10
  6. Step 6: Final answer
    x = 19,909.05

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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.