Home / 15,776.84-21,770.58-11,587.40

Finding the Fourth Proportional to 15,776.84, 21,770.58 and 11,587.40

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Solution

The fourth proportional to 15,776.84, 21,770.58 and 11,587.40 is: 15,989.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,776.84 : 21,770.58 = 11,587.40 : x
  2. Step 2: Convert to fraction form
    15,776.84/21,770.58 = 11,587.40/x
  3. Step 3: Cross multiply
    15,776.84x = 21,770.58 × 11,587.40
  4. Step 4: Simplify right side
    15,776.84x = 252,264,418.69
  5. Step 5: Solve for x
    x = 252,264,418.69/15,776.84
  6. Step 6: Final answer
    x = 15,989.54

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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.