Home / 15,684.06-21,643.02-8,609.88

Finding the Fourth Proportional to 15,684.06, 21,643.02 and 8,609.88

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Solution

The fourth proportional to 15,684.06, 21,643.02 and 8,609.88 is: 11,881.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,684.06 : 21,643.02 = 8,609.88 : x
  2. Step 2: Convert to fraction form
    15,684.06/21,643.02 = 8,609.88/x
  3. Step 3: Cross multiply
    15,684.06x = 21,643.02 × 8,609.88
  4. Step 4: Simplify right side
    15,684.06x = 186,343,805.04
  5. Step 5: Solve for x
    x = 186,343,805.04/15,684.06
  6. Step 6: Final answer
    x = 11,881.09

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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.