Home / 13,417.33-18,515.63-7,448.64

Finding the Fourth Proportional to 13,417.33, 18,515.63 and 7,448.64

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Solution

The fourth proportional to 13,417.33, 18,515.63 and 7,448.64 is: 10,278.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.33 : 18,515.63 = 7,448.64 : x
  2. Step 2: Convert to fraction form
    13,417.33/18,515.63 = 7,448.64/x
  3. Step 3: Cross multiply
    13,417.33x = 18,515.63 × 7,448.64
  4. Step 4: Simplify right side
    13,417.33x = 137,916,280.86
  5. Step 5: Solve for x
    x = 137,916,280.86/13,417.33
  6. Step 6: Final answer
    x = 10,278.97

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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.