Home / 13,398.36-18,490.80-7,430.52

Finding the Fourth Proportional to 13,398.36, 18,490.80 and 7,430.52

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Solution

The fourth proportional to 13,398.36, 18,490.80 and 7,430.52 is: 10,254.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.36 : 18,490.80 = 7,430.52 : x
  2. Step 2: Convert to fraction form
    13,398.36/18,490.80 = 7,430.52/x
  3. Step 3: Cross multiply
    13,398.36x = 18,490.80 × 7,430.52
  4. Step 4: Simplify right side
    13,398.36x = 137,396,259.22
  5. Step 5: Solve for x
    x = 137,396,259.22/13,398.36
  6. Step 6: Final answer
    x = 10,254.71

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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.