Home / 14,721.05-20,312.87-8,667.69

Finding the Fourth Proportional to 14,721.05, 20,312.87 and 8,667.69

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Solution

The fourth proportional to 14,721.05, 20,312.87 and 8,667.69 is: 11,960.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,721.05 : 20,312.87 = 8,667.69 : x
  2. Step 2: Convert to fraction form
    14,721.05/20,312.87 = 8,667.69/x
  3. Step 3: Cross multiply
    14,721.05x = 20,312.87 × 8,667.69
  4. Step 4: Simplify right side
    14,721.05x = 176,065,616.83
  5. Step 5: Solve for x
    x = 176,065,616.83/14,721.05
  6. Step 6: Final answer
    x = 11,960.13

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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.