Home / 12,888.38-19,306.95-8,492.51

Finding the Fourth Proportional to 12,888.38, 19,306.95 and 8,492.51

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Solution

The fourth proportional to 12,888.38, 19,306.95 and 8,492.51 is: 12,721.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,888.38 : 19,306.95 = 8,492.51 : x
  2. Step 2: Convert to fraction form
    12,888.38/19,306.95 = 8,492.51/x
  3. Step 3: Cross multiply
    12,888.38x = 19,306.95 × 8,492.51
  4. Step 4: Simplify right side
    12,888.38x = 163,964,465.94
  5. Step 5: Solve for x
    x = 163,964,465.94/12,888.38
  6. Step 6: Final answer
    x = 12,721.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.