Home / 22,018.71-30,385.64-12,458.51

Finding the Fourth Proportional to 22,018.71, 30,385.64 and 12,458.51

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Solution

The fourth proportional to 22,018.71, 30,385.64 and 12,458.51 is: 17,192.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,018.71 : 30,385.64 = 12,458.51 : x
  2. Step 2: Convert to fraction form
    22,018.71/30,385.64 = 12,458.51/x
  3. Step 3: Cross multiply
    22,018.71x = 30,385.64 × 12,458.51
  4. Step 4: Simplify right side
    22,018.71x = 378,559,963.88
  5. Step 5: Solve for x
    x = 378,559,963.88/22,018.71
  6. Step 6: Final answer
    x = 17,192.65

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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.