Home / 10,661.84-15,987.40-6,221.02

Finding the Fourth Proportional to 10,661.84, 15,987.40 and 6,221.02

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Solution

The fourth proportional to 10,661.84, 15,987.40 and 6,221.02 is: 9,328.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,661.84 : 15,987.40 = 6,221.02 : x
  2. Step 2: Convert to fraction form
    10,661.84/15,987.40 = 6,221.02/x
  3. Step 3: Cross multiply
    10,661.84x = 15,987.40 × 6,221.02
  4. Step 4: Simplify right side
    10,661.84x = 99,457,935.15
  5. Step 5: Solve for x
    x = 99,457,935.15/10,661.84
  6. Step 6: Final answer
    x = 9,328.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.