Home / 25,455.87-35,129.30-13,970.68

Finding the Fourth Proportional to 25,455.87, 35,129.30 and 13,970.68

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Solution

The fourth proportional to 25,455.87, 35,129.30 and 13,970.68 is: 19,279.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,455.87 : 35,129.30 = 13,970.68 : x
  2. Step 2: Convert to fraction form
    25,455.87/35,129.30 = 13,970.68/x
  3. Step 3: Cross multiply
    25,455.87x = 35,129.30 × 13,970.68
  4. Step 4: Simplify right side
    25,455.87x = 490,780,051.25
  5. Step 5: Solve for x
    x = 490,780,051.25/25,455.87
  6. Step 6: Final answer
    x = 19,279.64

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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.