Home / 13,398.98-18,491.58-7,430.60

Finding the Fourth Proportional to 13,398.98, 18,491.58 and 7,430.60

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Solution

The fourth proportional to 13,398.98, 18,491.58 and 7,430.60 is: 10,254.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.98 : 18,491.58 = 7,430.60 : x
  2. Step 2: Convert to fraction form
    13,398.98/18,491.58 = 7,430.60/x
  3. Step 3: Cross multiply
    13,398.98x = 18,491.58 × 7,430.60
  4. Step 4: Simplify right side
    13,398.98x = 137,403,534.35
  5. Step 5: Solve for x
    x = 137,403,534.35/13,398.98
  6. Step 6: Final answer
    x = 10,254.78

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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.