Home / 28,028.90-42,043.52-8,307.63

Finding the Fourth Proportional to 28,028.90, 42,043.52 and 8,307.63

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Solution

The fourth proportional to 28,028.90, 42,043.52 and 8,307.63 is: 12,461.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,028.90 : 42,043.52 = 8,307.63 : x
  2. Step 2: Convert to fraction form
    28,028.90/42,043.52 = 8,307.63/x
  3. Step 3: Cross multiply
    28,028.90x = 42,043.52 × 8,307.63
  4. Step 4: Simplify right side
    28,028.90x = 349,282,028.83
  5. Step 5: Solve for x
    x = 349,282,028.83/28,028.90
  6. Step 6: Final answer
    x = 12,461.50

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Half scale
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Double scale
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Similar ratio
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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.