Home / 13,440.80-18,548.93-7,472.39

Finding the Fourth Proportional to 13,440.80, 18,548.93 and 7,472.39

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Solution

The fourth proportional to 13,440.80, 18,548.93 and 7,472.39 is: 10,312.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,440.80 : 18,548.93 = 7,472.39 : x
  2. Step 2: Convert to fraction form
    13,440.80/18,548.93 = 7,472.39/x
  3. Step 3: Cross multiply
    13,440.80x = 18,548.93 × 7,472.39
  4. Step 4: Simplify right side
    13,440.80x = 138,604,764.98
  5. Step 5: Solve for x
    x = 138,604,764.98/13,440.80
  6. Step 6: Final answer
    x = 10,312.24

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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.