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Finding the Fourth Proportional to 9,895.78, 14,756.36 and 9,806.88

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Solution

The fourth proportional to 9,895.78, 14,756.36 and 9,806.88 is: 14,623.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,895.78 : 14,756.36 = 9,806.88 : x
  2. Step 2: Convert to fraction form
    9,895.78/14,756.36 = 9,806.88/x
  3. Step 3: Cross multiply
    9,895.78x = 14,756.36 × 9,806.88
  4. Step 4: Simplify right side
    9,895.78x = 144,713,851.76
  5. Step 5: Solve for x
    x = 144,713,851.76/9,895.78
  6. Step 6: Final answer
    x = 14,623.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.