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Finding the Fourth Proportional to 16,511.40, 23,159.70 and 16,511.40

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Solution

The fourth proportional to 16,511.40, 23,159.70 and 16,511.40 is: 23,159.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,511.40 : 23,159.70 = 16,511.40 : x
  2. Step 2: Convert to fraction form
    16,511.40/23,159.70 = 16,511.40/x
  3. Step 3: Cross multiply
    16,511.40x = 23,159.70 × 16,511.40
  4. Step 4: Simplify right side
    16,511.40x = 382,399,070.58
  5. Step 5: Solve for x
    x = 382,399,070.58/16,511.40
  6. Step 6: Final answer
    x = 23,159.70

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Half scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.