Home / 20,731.60-31,075.22-11,827.74

Finding the Fourth Proportional to 20,731.60, 31,075.22 and 11,827.74

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Solution

The fourth proportional to 20,731.60, 31,075.22 and 11,827.74 is: 17,728.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,731.60 : 31,075.22 = 11,827.74 : x
  2. Step 2: Convert to fraction form
    20,731.60/31,075.22 = 11,827.74/x
  3. Step 3: Cross multiply
    20,731.60x = 31,075.22 × 11,827.74
  4. Step 4: Simplify right side
    20,731.60x = 367,549,652.17
  5. Step 5: Solve for x
    x = 367,549,652.17/20,731.60
  6. Step 6: Final answer
    x = 17,728.96

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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.