Home / 13,717.81-18,930.61-7,430.19

Finding the Fourth Proportional to 13,717.81, 18,930.61 and 7,430.19

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Solution

The fourth proportional to 13,717.81, 18,930.61 and 7,430.19 is: 10,253.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,717.81 : 18,930.61 = 7,430.19 : x
  2. Step 2: Convert to fraction form
    13,717.81/18,930.61 = 7,430.19/x
  3. Step 3: Cross multiply
    13,717.81x = 18,930.61 × 7,430.19
  4. Step 4: Simplify right side
    13,717.81x = 140,658,029.12
  5. Step 5: Solve for x
    x = 140,658,029.12/13,717.81
  6. Step 6: Final answer
    x = 10,253.68

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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.