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Finding the Fourth Proportional to 26,927.31, 40,390.98 and 12,118.93

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Solution

The fourth proportional to 26,927.31, 40,390.98 and 12,118.93 is: 18,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,927.31 : 40,390.98 = 12,118.93 : x
  2. Step 2: Convert to fraction form
    26,927.31/40,390.98 = 12,118.93/x
  3. Step 3: Cross multiply
    26,927.31x = 40,390.98 × 12,118.93
  4. Step 4: Simplify right side
    26,927.31x = 489,495,459.25
  5. Step 5: Solve for x
    x = 489,495,459.25/26,927.31
  6. Step 6: Final answer
    x = 18,178.40

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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.