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Finding the Fourth Proportional to 10,854.54, 14,985.99 and 8,331.84

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Solution

The fourth proportional to 10,854.54, 14,985.99 and 8,331.84 is: 11,503.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,854.54 : 14,985.99 = 8,331.84 : x
  2. Step 2: Convert to fraction form
    10,854.54/14,985.99 = 8,331.84/x
  3. Step 3: Cross multiply
    10,854.54x = 14,985.99 × 8,331.84
  4. Step 4: Simplify right side
    10,854.54x = 124,860,870.92
  5. Step 5: Solve for x
    x = 124,860,870.92/10,854.54
  6. Step 6: Final answer
    x = 11,503.10

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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.