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Finding the Fourth Proportional to 10,884.70, 15,205.70 and 10,884.70

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Solution

The fourth proportional to 10,884.70, 15,205.70 and 10,884.70 is: 15,205.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,884.70 : 15,205.70 = 10,884.70 : x
  2. Step 2: Convert to fraction form
    10,884.70/15,205.70 = 10,884.70/x
  3. Step 3: Cross multiply
    10,884.70x = 15,205.70 × 10,884.70
  4. Step 4: Simplify right side
    10,884.70x = 165,509,482.79
  5. Step 5: Solve for x
    x = 165,509,482.79/10,884.70
  6. Step 6: Final answer
    x = 15,205.70

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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.