Home / 20,303.72-28,026.73-15,282.43

Finding the Fourth Proportional to 20,303.72, 28,026.73 and 15,282.43

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Solution

The fourth proportional to 20,303.72, 28,026.73 and 15,282.43 is: 21,095.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,303.72 : 28,026.73 = 15,282.43 : x
  2. Step 2: Convert to fraction form
    20,303.72/28,026.73 = 15,282.43/x
  3. Step 3: Cross multiply
    20,303.72x = 28,026.73 × 15,282.43
  4. Step 4: Simplify right side
    20,303.72x = 428,316,488.39
  5. Step 5: Solve for x
    x = 428,316,488.39/20,303.72
  6. Step 6: Final answer
    x = 21,095.47

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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.