Home / 12,729.36-19,089.12-4,937.12

Finding the Fourth Proportional to 12,729.36, 19,089.12 and 4,937.12

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Solution

The fourth proportional to 12,729.36, 19,089.12 and 4,937.12 is: 7,403.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,729.36 : 19,089.12 = 4,937.12 : x
  2. Step 2: Convert to fraction form
    12,729.36/19,089.12 = 4,937.12/x
  3. Step 3: Cross multiply
    12,729.36x = 19,089.12 × 4,937.12
  4. Step 4: Simplify right side
    12,729.36x = 94,245,276.13
  5. Step 5: Solve for x
    x = 94,245,276.13/12,729.36
  6. Step 6: Final answer
    x = 7,403.77

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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.