Home / 9,900.27-13,666.59-6,670.80

Finding the Fourth Proportional to 9,900.27, 13,666.59 and 6,670.80

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Solution

The fourth proportional to 9,900.27, 13,666.59 and 6,670.80 is: 9,208.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,900.27 : 13,666.59 = 6,670.80 : x
  2. Step 2: Convert to fraction form
    9,900.27/13,666.59 = 6,670.80/x
  3. Step 3: Cross multiply
    9,900.27x = 13,666.59 × 6,670.80
  4. Step 4: Simplify right side
    9,900.27x = 91,167,088.57
  5. Step 5: Solve for x
    x = 91,167,088.57/9,900.27
  6. Step 6: Final answer
    x = 9,208.55

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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.