Home / 13,386.83-18,473.55-7,418.45

Finding the Fourth Proportional to 13,386.83, 18,473.55 and 7,418.45

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Solution

The fourth proportional to 13,386.83, 18,473.55 and 7,418.45 is: 10,237.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,386.83 : 18,473.55 = 7,418.45 : x
  2. Step 2: Convert to fraction form
    13,386.83/18,473.55 = 7,418.45/x
  3. Step 3: Cross multiply
    13,386.83x = 18,473.55 × 7,418.45
  4. Step 4: Simplify right side
    13,386.83x = 137,045,014.63
  5. Step 5: Solve for x
    x = 137,045,014.63/13,386.83
  6. Step 6: Final answer
    x = 10,237.30

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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.