Home / 28,104.64-38,783.88-15,529.12

Finding the Fourth Proportional to 28,104.64, 38,783.88 and 15,529.12

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Solution

The fourth proportional to 28,104.64, 38,783.88 and 15,529.12 is: 21,429.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,104.64 : 38,783.88 = 15,529.12 : x
  2. Step 2: Convert to fraction form
    28,104.64/38,783.88 = 15,529.12/x
  3. Step 3: Cross multiply
    28,104.64x = 38,783.88 × 15,529.12
  4. Step 4: Simplify right side
    28,104.64x = 602,279,526.59
  5. Step 5: Solve for x
    x = 602,279,526.59/28,104.64
  6. Step 6: Final answer
    x = 21,429.90

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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.