Home / 12,603.29-18,913.64-5,207.81

Finding the Fourth Proportional to 12,603.29, 18,913.64 and 5,207.81

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Solution

The fourth proportional to 12,603.29, 18,913.64 and 5,207.81 is: 7,815.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,603.29 : 18,913.64 = 5,207.81 : x
  2. Step 2: Convert to fraction form
    12,603.29/18,913.64 = 5,207.81/x
  3. Step 3: Cross multiply
    12,603.29x = 18,913.64 × 5,207.81
  4. Step 4: Simplify right side
    12,603.29x = 98,498,643.53
  5. Step 5: Solve for x
    x = 98,498,643.53/12,603.29
  6. Step 6: Final answer
    x = 7,815.31

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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.