Home / 21,479.09-29,641.08-12,047.86

Finding the Fourth Proportional to 21,479.09, 29,641.08 and 12,047.86

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Solution

The fourth proportional to 21,479.09, 29,641.08 and 12,047.86 is: 16,626.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,479.09 : 29,641.08 = 12,047.86 : x
  2. Step 2: Convert to fraction form
    21,479.09/29,641.08 = 12,047.86/x
  3. Step 3: Cross multiply
    21,479.09x = 29,641.08 × 12,047.86
  4. Step 4: Simplify right side
    21,479.09x = 357,111,582.09
  5. Step 5: Solve for x
    x = 357,111,582.09/21,479.09
  6. Step 6: Final answer
    x = 16,626.01

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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.