Home / 20,953.26-28,929.15-13,007.16

Finding the Fourth Proportional to 20,953.26, 28,929.15 and 13,007.16

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Solution

The fourth proportional to 20,953.26, 28,929.15 and 13,007.16 is: 17,958.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,953.26 : 28,929.15 = 13,007.16 : x
  2. Step 2: Convert to fraction form
    20,953.26/28,929.15 = 13,007.16/x
  3. Step 3: Cross multiply
    20,953.26x = 28,929.15 × 13,007.16
  4. Step 4: Simplify right side
    20,953.26x = 376,286,082.71
  5. Step 5: Solve for x
    x = 376,286,082.71/20,953.26
  6. Step 6: Final answer
    x = 17,958.36

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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.