Home / 20,281.01-28,130.98-19,741.55

Finding the Fourth Proportional to 20,281.01, 28,130.98 and 19,741.55

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Solution

The fourth proportional to 20,281.01, 28,130.98 and 19,741.55 is: 27,382.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,281.01 : 28,130.98 = 19,741.55 : x
  2. Step 2: Convert to fraction form
    20,281.01/28,130.98 = 19,741.55/x
  3. Step 3: Cross multiply
    20,281.01x = 28,130.98 × 19,741.55
  4. Step 4: Simplify right side
    20,281.01x = 555,349,148.22
  5. Step 5: Solve for x
    x = 555,349,148.22/20,281.01
  6. Step 6: Final answer
    x = 27,382.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.