Home / 19,687.10-29,530.65-10,355.90

Finding the Fourth Proportional to 19,687.10, 29,530.65 and 10,355.90

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Solution

The fourth proportional to 19,687.10, 29,530.65 and 10,355.90 is: 15,533.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,687.10 : 29,530.65 = 10,355.90 : x
  2. Step 2: Convert to fraction form
    19,687.10/29,530.65 = 10,355.90/x
  3. Step 3: Cross multiply
    19,687.10x = 29,530.65 × 10,355.90
  4. Step 4: Simplify right side
    19,687.10x = 305,816,458.34
  5. Step 5: Solve for x
    x = 305,816,458.34/19,687.10
  6. Step 6: Final answer
    x = 15,533.85

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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.