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Finding the Fourth Proportional to 18,880.10, 26,053.88 and 12,166.01

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Solution

The fourth proportional to 18,880.10, 26,053.88 and 12,166.01 is: 16,788.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,880.10 : 26,053.88 = 12,166.01 : x
  2. Step 2: Convert to fraction form
    18,880.10/26,053.88 = 12,166.01/x
  3. Step 3: Cross multiply
    18,880.10x = 26,053.88 × 12,166.01
  4. Step 4: Simplify right side
    18,880.10x = 316,971,573.52
  5. Step 5: Solve for x
    x = 316,971,573.52/18,880.10
  6. Step 6: Final answer
    x = 16,788.66

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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.