Home / 22,312.08-30,789.36-12,239.28

Finding the Fourth Proportional to 22,312.08, 30,789.36 and 12,239.28

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Solution

The fourth proportional to 22,312.08, 30,789.36 and 12,239.28 is: 16,889.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,312.08 : 30,789.36 = 12,239.28 : x
  2. Step 2: Convert to fraction form
    22,312.08/30,789.36 = 12,239.28/x
  3. Step 3: Cross multiply
    22,312.08x = 30,789.36 × 12,239.28
  4. Step 4: Simplify right side
    22,312.08x = 376,839,598.06
  5. Step 5: Solve for x
    x = 376,839,598.06/22,312.08
  6. Step 6: Final answer
    x = 16,889.49

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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.