Home / 18,488.48-27,735.74-10,172.40

Finding the Fourth Proportional to 18,488.48, 27,735.74 and 10,172.40

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Solution

The fourth proportional to 18,488.48, 27,735.74 and 10,172.40 is: 15,260.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,488.48 : 27,735.74 = 10,172.40 : x
  2. Step 2: Convert to fraction form
    18,488.48/27,735.74 = 10,172.40/x
  3. Step 3: Cross multiply
    18,488.48x = 27,735.74 × 10,172.40
  4. Step 4: Simplify right side
    18,488.48x = 282,138,990.71
  5. Step 5: Solve for x
    x = 282,138,990.71/18,488.48
  6. Step 6: Final answer
    x = 15,260.26

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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.