Home / 22,018.94-30,386.15-12,587.70

Finding the Fourth Proportional to 22,018.94, 30,386.15 and 12,587.70

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Solution

The fourth proportional to 22,018.94, 30,386.15 and 12,587.70 is: 17,371.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,018.94 : 30,386.15 = 12,587.70 : x
  2. Step 2: Convert to fraction form
    22,018.94/30,386.15 = 12,587.70/x
  3. Step 3: Cross multiply
    22,018.94x = 30,386.15 × 12,587.70
  4. Step 4: Simplify right side
    22,018.94x = 382,491,740.36
  5. Step 5: Solve for x
    x = 382,491,740.36/22,018.94
  6. Step 6: Final answer
    x = 17,371.03

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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.