Home / 21,177.02-29,237.67-13,626.86

Finding the Fourth Proportional to 21,177.02, 29,237.67 and 13,626.86

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Solution

The fourth proportional to 21,177.02, 29,237.67 and 13,626.86 is: 18,813.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,177.02 : 29,237.67 = 13,626.86 : x
  2. Step 2: Convert to fraction form
    21,177.02/29,237.67 = 13,626.86/x
  3. Step 3: Cross multiply
    21,177.02x = 29,237.67 × 13,626.86
  4. Step 4: Simplify right side
    21,177.02x = 398,417,635.82
  5. Step 5: Solve for x
    x = 398,417,635.82/21,177.02
  6. Step 6: Final answer
    x = 18,813.68

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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.