Home / 21,270.54-29,349.76-12,316.49

Finding the Fourth Proportional to 21,270.54, 29,349.76 and 12,316.49

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Solution

The fourth proportional to 21,270.54, 29,349.76 and 12,316.49 is: 16,994.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,270.54 : 29,349.76 = 12,316.49 : x
  2. Step 2: Convert to fraction form
    21,270.54/29,349.76 = 12,316.49/x
  3. Step 3: Cross multiply
    21,270.54x = 29,349.76 × 12,316.49
  4. Step 4: Simplify right side
    21,270.54x = 361,486,025.54
  5. Step 5: Solve for x
    x = 361,486,025.54/21,270.54
  6. Step 6: Final answer
    x = 16,994.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.