Home / 13,979.95-20,973.58-5,214.94

Finding the Fourth Proportional to 13,979.95, 20,973.58 and 5,214.94

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Solution

The fourth proportional to 13,979.95, 20,973.58 and 5,214.94 is: 7,823.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,979.95 : 20,973.58 = 5,214.94 : x
  2. Step 2: Convert to fraction form
    13,979.95/20,973.58 = 5,214.94/x
  3. Step 3: Cross multiply
    13,979.95x = 20,973.58 × 5,214.94
  4. Step 4: Simplify right side
    13,979.95x = 109,375,895.81
  5. Step 5: Solve for x
    x = 109,375,895.81/13,979.95
  6. Step 6: Final answer
    x = 7,823.77

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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.