Home / 28,235.64-38,966.94-15,661.56

Finding the Fourth Proportional to 28,235.64, 38,966.94 and 15,661.56

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Solution

The fourth proportional to 28,235.64, 38,966.94 and 15,661.56 is: 21,613.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,235.64 : 38,966.94 = 15,661.56 : x
  2. Step 2: Convert to fraction form
    28,235.64/38,966.94 = 15,661.56/x
  3. Step 3: Cross multiply
    28,235.64x = 38,966.94 × 15,661.56
  4. Step 4: Simplify right side
    28,235.64x = 610,283,068.83
  5. Step 5: Solve for x
    x = 610,283,068.83/28,235.64
  6. Step 6: Final answer
    x = 21,613.93

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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.