Home / 13,386.90-18,473.64-7,418.52

Finding the Fourth Proportional to 13,386.90, 18,473.64 and 7,418.52

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Solution

The fourth proportional to 13,386.90, 18,473.64 and 7,418.52 is: 10,237.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.90 : 18,473.64 = 7,418.52 : x
  2. Step 2: Convert to fraction form
    13,386.90/18,473.64 = 7,418.52/x
  3. Step 3: Cross multiply
    13,386.90x = 18,473.64 × 7,418.52
  4. Step 4: Simplify right side
    13,386.90x = 137,047,067.81
  5. Step 5: Solve for x
    x = 137,047,067.81/13,386.90
  6. Step 6: Final answer
    x = 10,237.40

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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.