Home / 26,278.08-39,430.56-12,423.36

Finding the Fourth Proportional to 26,278.08, 39,430.56 and 12,423.36

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Solution

The fourth proportional to 26,278.08, 39,430.56 and 12,423.36 is: 18,641.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,278.08 : 39,430.56 = 12,423.36 : x
  2. Step 2: Convert to fraction form
    26,278.08/39,430.56 = 12,423.36/x
  3. Step 3: Cross multiply
    26,278.08x = 39,430.56 × 12,423.36
  4. Step 4: Simplify right side
    26,278.08x = 489,860,041.88
  5. Step 5: Solve for x
    x = 489,860,041.88/26,278.08
  6. Step 6: Final answer
    x = 18,641.39

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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.