Home / 21,064.68-29,081.70-14,005.80

Finding the Fourth Proportional to 21,064.68, 29,081.70 and 14,005.80

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Solution

The fourth proportional to 21,064.68, 29,081.70 and 14,005.80 is: 19,336.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064.68 : 29,081.70 = 14,005.80 : x
  2. Step 2: Convert to fraction form
    21,064.68/29,081.70 = 14,005.80/x
  3. Step 3: Cross multiply
    21,064.68x = 29,081.70 × 14,005.80
  4. Step 4: Simplify right side
    21,064.68x = 407,312,473.86
  5. Step 5: Solve for x
    x = 407,312,473.86/21,064.68
  6. Step 6: Final answer
    x = 19,336.28

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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.