Home / 14,079.83-21,120.14-5,312.79

Finding the Fourth Proportional to 14,079.83, 21,120.14 and 5,312.79

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Solution

The fourth proportional to 14,079.83, 21,120.14 and 5,312.79 is: 7,969.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,079.83 : 21,120.14 = 5,312.79 : x
  2. Step 2: Convert to fraction form
    14,079.83/21,120.14 = 5,312.79/x
  3. Step 3: Cross multiply
    14,079.83x = 21,120.14 × 5,312.79
  4. Step 4: Simplify right side
    14,079.83x = 112,206,881.87
  5. Step 5: Solve for x
    x = 112,206,881.87/14,079.83
  6. Step 6: Final answer
    x = 7,969.34

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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.