Home / 21,178.17-29,226.57-11,746.74

Finding the Fourth Proportional to 21,178.17, 29,226.57 and 11,746.74

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Solution

The fourth proportional to 21,178.17, 29,226.57 and 11,746.74 is: 16,210.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,178.17 : 29,226.57 = 11,746.74 : x
  2. Step 2: Convert to fraction form
    21,178.17/29,226.57 = 11,746.74/x
  3. Step 3: Cross multiply
    21,178.17x = 29,226.57 × 11,746.74
  4. Step 4: Simplify right side
    21,178.17x = 343,316,918.88
  5. Step 5: Solve for x
    x = 343,316,918.88/21,178.17
  6. Step 6: Final answer
    x = 16,210.89

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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.