Home / 28,031.85-42,068.61-13,245.30

Finding the Fourth Proportional to 28,031.85, 42,068.61 and 13,245.30

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Solution

The fourth proportional to 28,031.85, 42,068.61 and 13,245.30 is: 19,877.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,031.85 : 42,068.61 = 13,245.30 : x
  2. Step 2: Convert to fraction form
    28,031.85/42,068.61 = 13,245.30/x
  3. Step 3: Cross multiply
    28,031.85x = 42,068.61 × 13,245.30
  4. Step 4: Simplify right side
    28,031.85x = 557,211,360.03
  5. Step 5: Solve for x
    x = 557,211,360.03/28,031.85
  6. Step 6: Final answer
    x = 19,877.79

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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.