Home / 18,637.84-25,718.88-10,678.72

Finding the Fourth Proportional to 18,637.84, 25,718.88 and 10,678.72

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Solution

The fourth proportional to 18,637.84, 25,718.88 and 10,678.72 is: 14,735.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,637.84 : 25,718.88 = 10,678.72 : x
  2. Step 2: Convert to fraction form
    18,637.84/25,718.88 = 10,678.72/x
  3. Step 3: Cross multiply
    18,637.84x = 25,718.88 × 10,678.72
  4. Step 4: Simplify right side
    18,637.84x = 274,644,718.23
  5. Step 5: Solve for x
    x = 274,644,718.23/18,637.84
  6. Step 6: Final answer
    x = 14,735.87

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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.