Home / 13,446.63-18,556.56-7,478.55

Finding the Fourth Proportional to 13,446.63, 18,556.56 and 7,478.55

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Solution

The fourth proportional to 13,446.63, 18,556.56 and 7,478.55 is: 10,320.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,446.63 : 18,556.56 = 7,478.55 : x
  2. Step 2: Convert to fraction form
    13,446.63/18,556.56 = 7,478.55/x
  3. Step 3: Cross multiply
    13,446.63x = 18,556.56 × 7,478.55
  4. Step 4: Simplify right side
    13,446.63x = 138,776,161.79
  5. Step 5: Solve for x
    x = 138,776,161.79/13,446.63
  6. Step 6: Final answer
    x = 10,320.52

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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.