Home / 14,140.80-21,203.52-7,221.12

Finding the Fourth Proportional to 14,140.80, 21,203.52 and 7,221.12

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Solution

The fourth proportional to 14,140.80, 21,203.52 and 7,221.12 is: 10,827.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,140.80 : 21,203.52 = 7,221.12 : x
  2. Step 2: Convert to fraction form
    14,140.80/21,203.52 = 7,221.12/x
  3. Step 3: Cross multiply
    14,140.80x = 21,203.52 × 7,221.12
  4. Step 4: Simplify right side
    14,140.80x = 153,113,162.34
  5. Step 5: Solve for x
    x = 153,113,162.34/14,140.80
  6. Step 6: Final answer
    x = 10,827.76

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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.