Home / 22,188.69-30,620.48-12,117.35

Finding the Fourth Proportional to 22,188.69, 30,620.48 and 12,117.35

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Solution

The fourth proportional to 22,188.69, 30,620.48 and 12,117.35 is: 16,721.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,188.69 : 30,620.48 = 12,117.35 : x
  2. Step 2: Convert to fraction form
    22,188.69/30,620.48 = 12,117.35/x
  3. Step 3: Cross multiply
    22,188.69x = 30,620.48 × 12,117.35
  4. Step 4: Simplify right side
    22,188.69x = 371,038,859.64
  5. Step 5: Solve for x
    x = 371,038,859.64/22,188.69
  6. Step 6: Final answer
    x = 16,721.98

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Double scale
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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.