Home / 15,684.13-21,644.28-8,610.40

Finding the Fourth Proportional to 15,684.13, 21,644.28 and 8,610.40

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Solution

The fourth proportional to 15,684.13, 21,644.28 and 8,610.40 is: 11,882.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,684.13 : 21,644.28 = 8,610.40 : x
  2. Step 2: Convert to fraction form
    15,684.13/21,644.28 = 8,610.40/x
  3. Step 3: Cross multiply
    15,684.13x = 21,644.28 × 8,610.40
  4. Step 4: Simplify right side
    15,684.13x = 186,365,908.51
  5. Step 5: Solve for x
    x = 186,365,908.51/15,684.13
  6. Step 6: Final answer
    x = 11,882.45

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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.