Home / 19,389.59-26,756.24-10,891.28

Finding the Fourth Proportional to 19,389.59, 26,756.24 and 10,891.28

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Solution

The fourth proportional to 19,389.59, 26,756.24 and 10,891.28 is: 15,029.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,389.59 : 26,756.24 = 10,891.28 : x
  2. Step 2: Convert to fraction form
    19,389.59/26,756.24 = 10,891.28/x
  3. Step 3: Cross multiply
    19,389.59x = 26,756.24 × 10,891.28
  4. Step 4: Simplify right side
    19,389.59x = 291,409,624.78
  5. Step 5: Solve for x
    x = 291,409,624.78/19,389.59
  6. Step 6: Final answer
    x = 15,029.18

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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.