Home / 13,370.15-18,459.75-8,336.40

Finding the Fourth Proportional to 13,370.15, 18,459.75 and 8,336.40

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Solution

The fourth proportional to 13,370.15, 18,459.75 and 8,336.40 is: 11,509.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,370.15 : 18,459.75 = 8,336.40 : x
  2. Step 2: Convert to fraction form
    13,370.15/18,459.75 = 8,336.40/x
  3. Step 3: Cross multiply
    13,370.15x = 18,459.75 × 8,336.40
  4. Step 4: Simplify right side
    13,370.15x = 153,887,859.90
  5. Step 5: Solve for x
    x = 153,887,859.90/13,370.15
  6. Step 6: Final answer
    x = 11,509.81

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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.