Home / 21,079.09-31,624.10-11,210.25

Finding the Fourth Proportional to 21,079.09, 31,624.10 and 11,210.25

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Solution

The fourth proportional to 21,079.09, 31,624.10 and 11,210.25 is: 16,818.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.09 : 31,624.10 = 11,210.25 : x
  2. Step 2: Convert to fraction form
    21,079.09/31,624.10 = 11,210.25/x
  3. Step 3: Cross multiply
    21,079.09x = 31,624.10 × 11,210.25
  4. Step 4: Simplify right side
    21,079.09x = 354,514,053.01
  5. Step 5: Solve for x
    x = 354,514,053.01/21,079.09
  6. Step 6: Final answer
    x = 16,818.28

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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.