Home / 15,864.40-21,885.51-11,151.46

Finding the Fourth Proportional to 15,864.40, 21,885.51 and 11,151.46

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Solution

The fourth proportional to 15,864.40, 21,885.51 and 11,151.46 is: 15,383.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.40 : 21,885.51 = 11,151.46 : x
  2. Step 2: Convert to fraction form
    15,864.40/21,885.51 = 11,151.46/x
  3. Step 3: Cross multiply
    15,864.40x = 21,885.51 × 11,151.46
  4. Step 4: Simplify right side
    15,864.40x = 244,055,389.34
  5. Step 5: Solve for x
    x = 244,055,389.34/15,864.40
  6. Step 6: Final answer
    x = 15,383.84

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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.