Home / 20,319.26-28,041.64-11,366.91

Finding the Fourth Proportional to 20,319.26, 28,041.64 and 11,366.91

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Solution

The fourth proportional to 20,319.26, 28,041.64 and 11,366.91 is: 15,686.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,319.26 : 28,041.64 = 11,366.91 : x
  2. Step 2: Convert to fraction form
    20,319.26/28,041.64 = 11,366.91/x
  3. Step 3: Cross multiply
    20,319.26x = 28,041.64 × 11,366.91
  4. Step 4: Simplify right side
    20,319.26x = 318,746,889.08
  5. Step 5: Solve for x
    x = 318,746,889.08/20,319.26
  6. Step 6: Final answer
    x = 15,686.93

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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.