Home / 13,417.80-18,516.60-7,449.48

Finding the Fourth Proportional to 13,417.80, 18,516.60 and 7,449.48

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Solution

The fourth proportional to 13,417.80, 18,516.60 and 7,449.48 is: 10,280.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,417.80 : 18,516.60 = 7,449.48 : x
  2. Step 2: Convert to fraction form
    13,417.80/18,516.60 = 7,449.48/x
  3. Step 3: Cross multiply
    13,417.80x = 18,516.60 × 7,449.48
  4. Step 4: Simplify right side
    13,417.80x = 137,939,041.37
  5. Step 5: Solve for x
    x = 137,939,041.37/13,417.80
  6. Step 6: Final answer
    x = 10,280.31

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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.