Home / 20,695.08-28,539.36-13,904.46

Finding the Fourth Proportional to 20,695.08, 28,539.36 and 13,904.46

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Solution

The fourth proportional to 20,695.08, 28,539.36 and 13,904.46 is: 19,174.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,695.08 : 28,539.36 = 13,904.46 : x
  2. Step 2: Convert to fraction form
    20,695.08/28,539.36 = 13,904.46/x
  3. Step 3: Cross multiply
    20,695.08x = 28,539.36 × 13,904.46
  4. Step 4: Simplify right side
    20,695.08x = 396,824,389.55
  5. Step 5: Solve for x
    x = 396,824,389.55/20,695.08
  6. Step 6: Final answer
    x = 19,174.82

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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.