Home / 13,572.90-18,730.26-7,440.66

Finding the Fourth Proportional to 13,572.90, 18,730.26 and 7,440.66

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Solution

The fourth proportional to 13,572.90, 18,730.26 and 7,440.66 is: 10,267.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,572.90 : 18,730.26 = 7,440.66 : x
  2. Step 2: Convert to fraction form
    13,572.90/18,730.26 = 7,440.66/x
  3. Step 3: Cross multiply
    13,572.90x = 18,730.26 × 7,440.66
  4. Step 4: Simplify right side
    13,572.90x = 139,365,496.37
  5. Step 5: Solve for x
    x = 139,365,496.37/13,572.90
  6. Step 6: Final answer
    x = 10,267.92

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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.