Home / 13,566.08-18,708.69-9,309.63

Finding the Fourth Proportional to 13,566.08, 18,708.69 and 9,309.63

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Solution

The fourth proportional to 13,566.08, 18,708.69 and 9,309.63 is: 12,838.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,566.08 : 18,708.69 = 9,309.63 : x
  2. Step 2: Convert to fraction form
    13,566.08/18,708.69 = 9,309.63/x
  3. Step 3: Cross multiply
    13,566.08x = 18,708.69 × 9,309.63
  4. Step 4: Simplify right side
    13,566.08x = 174,170,981.68
  5. Step 5: Solve for x
    x = 174,170,981.68/13,566.08
  6. Step 6: Final answer
    x = 12,838.72

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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.