Home / 20,359.45-28,095.51-11,407.45

Finding the Fourth Proportional to 20,359.45, 28,095.51 and 11,407.45

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Solution

The fourth proportional to 20,359.45, 28,095.51 and 11,407.45 is: 15,741.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,359.45 : 28,095.51 = 11,407.45 : x
  2. Step 2: Convert to fraction form
    20,359.45/28,095.51 = 11,407.45/x
  3. Step 3: Cross multiply
    20,359.45x = 28,095.51 × 11,407.45
  4. Step 4: Simplify right side
    20,359.45x = 320,498,125.55
  5. Step 5: Solve for x
    x = 320,498,125.55/20,359.45
  6. Step 6: Final answer
    x = 15,741.98

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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.