Home / 19,387.78-26,756.10-10,889.46

Finding the Fourth Proportional to 19,387.78, 26,756.10 and 10,889.46

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Solution

The fourth proportional to 19,387.78, 26,756.10 and 10,889.46 is: 15,028.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,387.78 : 26,756.10 = 10,889.46 : x
  2. Step 2: Convert to fraction form
    19,387.78/26,756.10 = 10,889.46/x
  3. Step 3: Cross multiply
    19,387.78x = 26,756.10 × 10,889.46
  4. Step 4: Simplify right side
    19,387.78x = 291,359,480.71
  5. Step 5: Solve for x
    x = 291,359,480.71/19,387.78
  6. Step 6: Final answer
    x = 15,028.00

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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.