Home / 12,088.59-16,672.64-9,989.07

Finding the Fourth Proportional to 12,088.59, 16,672.64 and 9,989.07

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Solution

The fourth proportional to 12,088.59, 16,672.64 and 9,989.07 is: 13,776.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,088.59 : 16,672.64 = 9,989.07 : x
  2. Step 2: Convert to fraction form
    12,088.59/16,672.64 = 9,989.07/x
  3. Step 3: Cross multiply
    12,088.59x = 16,672.64 × 9,989.07
  4. Step 4: Simplify right side
    12,088.59x = 166,544,118.10
  5. Step 5: Solve for x
    x = 166,544,118.10/12,088.59
  6. Step 6: Final answer
    x = 13,776.97

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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.