Home / 12,210.90-18,292.70-6,929.94

Finding the Fourth Proportional to 12,210.90, 18,292.70 and 6,929.94

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Solution

The fourth proportional to 12,210.90, 18,292.70 and 6,929.94 is: 10,381.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,210.90 : 18,292.70 = 6,929.94 : x
  2. Step 2: Convert to fraction form
    12,210.90/18,292.70 = 6,929.94/x
  3. Step 3: Cross multiply
    12,210.90x = 18,292.70 × 6,929.94
  4. Step 4: Simplify right side
    12,210.90x = 126,767,278.79
  5. Step 5: Solve for x
    x = 126,767,278.79/12,210.90
  6. Step 6: Final answer
    x = 10,381.49

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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.