Home / 20,272.29-30,260.26-18,808.80

Finding the Fourth Proportional to 20,272.29, 30,260.26 and 18,808.80

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Solution

The fourth proportional to 20,272.29, 30,260.26 and 18,808.80 is: 28,075.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,272.29 : 30,260.26 = 18,808.80 : x
  2. Step 2: Convert to fraction form
    20,272.29/30,260.26 = 18,808.80/x
  3. Step 3: Cross multiply
    20,272.29x = 30,260.26 × 18,808.80
  4. Step 4: Simplify right side
    20,272.29x = 569,159,178.29
  5. Step 5: Solve for x
    x = 569,159,178.29/20,272.29
  6. Step 6: Final answer
    x = 28,075.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.