Home / 18,007.10-26,987.70-10,109.60

Finding the Fourth Proportional to 18,007.10, 26,987.70 and 10,109.60

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Solution

The fourth proportional to 18,007.10, 26,987.70 and 10,109.60 is: 15,151.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,007.10 : 26,987.70 = 10,109.60 : x
  2. Step 2: Convert to fraction form
    18,007.10/26,987.70 = 10,109.60/x
  3. Step 3: Cross multiply
    18,007.10x = 26,987.70 × 10,109.60
  4. Step 4: Simplify right side
    18,007.10x = 272,834,851.92
  5. Step 5: Solve for x
    x = 272,834,851.92/18,007.10
  6. Step 6: Final answer
    x = 15,151.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.