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Finding the Fourth Proportional to 10,888.20, 15,210.60 and 10,888.20

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Solution

The fourth proportional to 10,888.20, 15,210.60 and 10,888.20 is: 15,210.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,888.20 : 15,210.60 = 10,888.20 : x
  2. Step 2: Convert to fraction form
    10,888.20/15,210.60 = 10,888.20/x
  3. Step 3: Cross multiply
    10,888.20x = 15,210.60 × 10,888.20
  4. Step 4: Simplify right side
    10,888.20x = 165,616,054.92
  5. Step 5: Solve for x
    x = 165,616,054.92/10,888.20
  6. Step 6: Final answer
    x = 15,210.60

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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.