Home / 12,303.64-16,988.70-9,906.00

Finding the Fourth Proportional to 12,303.64, 16,988.70 and 9,906.00

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Solution

The fourth proportional to 12,303.64, 16,988.70 and 9,906.00 is: 13,678.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,303.64 : 16,988.70 = 9,906.00 : x
  2. Step 2: Convert to fraction form
    12,303.64/16,988.70 = 9,906.00/x
  3. Step 3: Cross multiply
    12,303.64x = 16,988.70 × 9,906.00
  4. Step 4: Simplify right side
    12,303.64x = 168,289,927.73
  5. Step 5: Solve for x
    x = 168,289,927.73/12,303.64
  6. Step 6: Final answer
    x = 13,678.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.