Home / 13,440.63-20,060.24-13,218.91

Finding the Fourth Proportional to 13,440.63, 20,060.24 and 13,218.91

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Solution

The fourth proportional to 13,440.63, 20,060.24 and 13,218.91 is: 19,729.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.63 : 20,060.24 = 13,218.91 : x
  2. Step 2: Convert to fraction form
    13,440.63/20,060.24 = 13,218.91/x
  3. Step 3: Cross multiply
    13,440.63x = 20,060.24 × 13,218.91
  4. Step 4: Simplify right side
    13,440.63x = 265,174,440.46
  5. Step 5: Solve for x
    x = 265,174,440.46/13,440.63
  6. Step 6: Final answer
    x = 19,729.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.