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Finding the Fourth Proportional to 28,014.93, 42,026.45 and 8,290.89

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Solution

The fourth proportional to 28,014.93, 42,026.45 and 8,290.89 is: 12,437.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,014.93 : 42,026.45 = 8,290.89 : x
  2. Step 2: Convert to fraction form
    28,014.93/42,026.45 = 8,290.89/x
  3. Step 3: Cross multiply
    28,014.93x = 42,026.45 × 8,290.89
  4. Step 4: Simplify right side
    28,014.93x = 348,436,632.59
  5. Step 5: Solve for x
    x = 348,436,632.59/28,014.93
  6. Step 6: Final answer
    x = 12,437.53

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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.