Home / 13,430.48-18,521.66-8,393.09

Finding the Fourth Proportional to 13,430.48, 18,521.66 and 8,393.09

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Solution

The fourth proportional to 13,430.48, 18,521.66 and 8,393.09 is: 11,574.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,430.48 : 18,521.66 = 8,393.09 : x
  2. Step 2: Convert to fraction form
    13,430.48/18,521.66 = 8,393.09/x
  3. Step 3: Cross multiply
    13,430.48x = 18,521.66 × 8,393.09
  4. Step 4: Simplify right side
    13,430.48x = 155,453,887.70
  5. Step 5: Solve for x
    x = 155,453,887.70/13,430.48
  6. Step 6: Final answer
    x = 11,574.71

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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.