Home / 28,235.48-38,965.26-15,661.04

Finding the Fourth Proportional to 28,235.48, 38,965.26 and 15,661.04

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Solution

The fourth proportional to 28,235.48, 38,965.26 and 15,661.04 is: 21,612.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.48 : 38,965.26 = 15,661.04 : x
  2. Step 2: Convert to fraction form
    28,235.48/38,965.26 = 15,661.04/x
  3. Step 3: Cross multiply
    28,235.48x = 38,965.26 × 15,661.04
  4. Step 4: Simplify right side
    28,235.48x = 610,236,495.47
  5. Step 5: Solve for x
    x = 610,236,495.47/28,235.48
  6. Step 6: Final answer
    x = 21,612.40

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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.