Home / 20,964.93-28,931.14-12,017.71

Finding the Fourth Proportional to 20,964.93, 28,931.14 and 12,017.71

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Solution

The fourth proportional to 20,964.93, 28,931.14 and 12,017.71 is: 16,584.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,964.93 : 28,931.14 = 12,017.71 : x
  2. Step 2: Convert to fraction form
    20,964.93/28,931.14 = 12,017.71/x
  3. Step 3: Cross multiply
    20,964.93x = 28,931.14 × 12,017.71
  4. Step 4: Simplify right side
    20,964.93x = 347,686,050.49
  5. Step 5: Solve for x
    x = 347,686,050.49/20,964.93
  6. Step 6: Final answer
    x = 16,584.17

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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.