Home / 28,085.26-38,739.86-21,356.13

Finding the Fourth Proportional to 28,085.26, 38,739.86 and 21,356.13

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Solution

The fourth proportional to 28,085.26, 38,739.86 and 21,356.13 is: 29,457.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,085.26 : 38,739.86 = 21,356.13 : x
  2. Step 2: Convert to fraction form
    28,085.26/38,739.86 = 21,356.13/x
  3. Step 3: Cross multiply
    28,085.26x = 38,739.86 × 21,356.13
  4. Step 4: Simplify right side
    28,085.26x = 827,333,465.93
  5. Step 5: Solve for x
    x = 827,333,465.93/28,085.26
  6. Step 6: Final answer
    x = 29,457.93

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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.