Home / 21,210.68-29,269.26-12,251.16

Finding the Fourth Proportional to 21,210.68, 29,269.26 and 12,251.16

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Solution

The fourth proportional to 21,210.68, 29,269.26 and 12,251.16 is: 16,905.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.68 : 29,269.26 = 12,251.16 : x
  2. Step 2: Convert to fraction form
    21,210.68/29,269.26 = 12,251.16/x
  3. Step 3: Cross multiply
    21,210.68x = 29,269.26 × 12,251.16
  4. Step 4: Simplify right side
    21,210.68x = 358,582,387.34
  5. Step 5: Solve for x
    x = 358,582,387.34/21,210.68
  6. Step 6: Final answer
    x = 16,905.75

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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.