Home / 28,182.84-38,888.82-15,607.68

Finding the Fourth Proportional to 28,182.84, 38,888.82 and 15,607.68

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Solution

The fourth proportional to 28,182.84, 38,888.82 and 15,607.68 is: 21,536.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,182.84 : 38,888.82 = 15,607.68 : x
  2. Step 2: Convert to fraction form
    28,182.84/38,888.82 = 15,607.68/x
  3. Step 3: Cross multiply
    28,182.84x = 38,888.82 × 15,607.68
  4. Step 4: Simplify right side
    28,182.84x = 606,964,258.14
  5. Step 5: Solve for x
    x = 606,964,258.14/28,182.84
  6. Step 6: Final answer
    x = 21,536.66

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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.