Home / 28,012.35-42,026.72-8,291.40

Finding the Fourth Proportional to 28,012.35, 42,026.72 and 8,291.40

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Solution

The fourth proportional to 28,012.35, 42,026.72 and 8,291.40 is: 12,439.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,012.35 : 42,026.72 = 8,291.40 : x
  2. Step 2: Convert to fraction form
    28,012.35/42,026.72 = 8,291.40/x
  3. Step 3: Cross multiply
    28,012.35x = 42,026.72 × 8,291.40
  4. Step 4: Simplify right side
    28,012.35x = 348,460,304.75
  5. Step 5: Solve for x
    x = 348,460,304.75/28,012.35
  6. Step 6: Final answer
    x = 12,439.52

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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.