Home / 11,929.39-16,461-6,623.18

Finding the Fourth Proportional to 11,929.39, 16,461 and 6,623.18

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Solution

The fourth proportional to 11,929.39, 16,461 and 6,623.18 is: 9,139.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,929.39 : 16,461 = 6,623.18 : x
  2. Step 2: Convert to fraction form
    11,929.39/16,461 = 6,623.18/x
  3. Step 3: Cross multiply
    11,929.39x = 16,461 × 6,623.18
  4. Step 4: Simplify right side
    11,929.39x = 109,024,145.40
  5. Step 5: Solve for x
    x = 109,024,145.40/11,929.39
  6. Step 6: Final answer
    x = 9,139.12

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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.