Home / 13,570.08-18,728.93-9,317.61

Finding the Fourth Proportional to 13,570.08, 18,728.93 and 9,317.61

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Solution

The fourth proportional to 13,570.08, 18,728.93 and 9,317.61 is: 12,859.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,570.08 : 18,728.93 = 9,317.61 : x
  2. Step 2: Convert to fraction form
    13,570.08/18,728.93 = 9,317.61/x
  3. Step 3: Cross multiply
    13,570.08x = 18,728.93 × 9,317.61
  4. Step 4: Simplify right side
    13,570.08x = 174,508,865.46
  5. Step 5: Solve for x
    x = 174,508,865.46/13,570.08
  6. Step 6: Final answer
    x = 12,859.83

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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.