Home / 28,221.58-38,946.23-15,475.92

Finding the Fourth Proportional to 28,221.58, 38,946.23 and 15,475.92

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Solution

The fourth proportional to 28,221.58, 38,946.23 and 15,475.92 is: 21,357.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,221.58 : 38,946.23 = 15,475.92 : x
  2. Step 2: Convert to fraction form
    28,221.58/38,946.23 = 15,475.92/x
  3. Step 3: Cross multiply
    28,221.58x = 38,946.23 × 15,475.92
  4. Step 4: Simplify right side
    28,221.58x = 602,728,662.40
  5. Step 5: Solve for x
    x = 602,728,662.40/28,221.58
  6. Step 6: Final answer
    x = 21,357.02

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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.