Home / 18,931.24-28,368.06-16,972.84

Finding the Fourth Proportional to 18,931.24, 28,368.06 and 16,972.84

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Solution

The fourth proportional to 18,931.24, 28,368.06 and 16,972.84 is: 25,433.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,931.24 : 28,368.06 = 16,972.84 : x
  2. Step 2: Convert to fraction form
    18,931.24/28,368.06 = 16,972.84/x
  3. Step 3: Cross multiply
    18,931.24x = 28,368.06 × 16,972.84
  4. Step 4: Simplify right side
    18,931.24x = 481,486,543.49
  5. Step 5: Solve for x
    x = 481,486,543.49/18,931.24
  6. Step 6: Final answer
    x = 25,433.44

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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.