Home / 18,929.57-26,120.39-10,970.69

Finding the Fourth Proportional to 18,929.57, 26,120.39 and 10,970.69

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Solution

The fourth proportional to 18,929.57, 26,120.39 and 10,970.69 is: 15,138.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,929.57 : 26,120.39 = 10,970.69 : x
  2. Step 2: Convert to fraction form
    18,929.57/26,120.39 = 10,970.69/x
  3. Step 3: Cross multiply
    18,929.57x = 26,120.39 × 10,970.69
  4. Step 4: Simplify right side
    18,929.57x = 286,558,515.91
  5. Step 5: Solve for x
    x = 286,558,515.91/18,929.57
  6. Step 6: Final answer
    x = 15,138.15

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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.