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Finding the Fourth Proportional to 9,867.77, 14,729.66 and 8,622.19

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Solution

The fourth proportional to 9,867.77, 14,729.66 and 8,622.19 is: 12,870.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,867.77 : 14,729.66 = 8,622.19 : x
  2. Step 2: Convert to fraction form
    9,867.77/14,729.66 = 8,622.19/x
  3. Step 3: Cross multiply
    9,867.77x = 14,729.66 × 8,622.19
  4. Step 4: Simplify right side
    9,867.77x = 127,001,911.89
  5. Step 5: Solve for x
    x = 127,001,911.89/9,867.77
  6. Step 6: Final answer
    x = 12,870.38

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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.