Home / 21,429.40-32,129.70-9,736.60

Finding the Fourth Proportional to 21,429.40, 32,129.70 and 9,736.60

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Solution

The fourth proportional to 21,429.40, 32,129.70 and 9,736.60 is: 14,598.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,429.40 : 32,129.70 = 9,736.60 : x
  2. Step 2: Convert to fraction form
    21,429.40/32,129.70 = 9,736.60/x
  3. Step 3: Cross multiply
    21,429.40x = 32,129.70 × 9,736.60
  4. Step 4: Simplify right side
    21,429.40x = 312,834,037.02
  5. Step 5: Solve for x
    x = 312,834,037.02/21,429.40
  6. Step 6: Final answer
    x = 14,598.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.