Home / 18,948.47-28,386.39-10,603.25

Finding the Fourth Proportional to 18,948.47, 28,386.39 and 10,603.25

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Solution

The fourth proportional to 18,948.47, 28,386.39 and 10,603.25 is: 15,884.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,948.47 : 28,386.39 = 10,603.25 : x
  2. Step 2: Convert to fraction form
    18,948.47/28,386.39 = 10,603.25/x
  3. Step 3: Cross multiply
    18,948.47x = 28,386.39 × 10,603.25
  4. Step 4: Simplify right side
    18,948.47x = 300,987,989.77
  5. Step 5: Solve for x
    x = 300,987,989.77/18,948.47
  6. Step 6: Final answer
    x = 15,884.55

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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.