Home / 30,529.19-42,109.24-21,473.75

Finding the Fourth Proportional to 30,529.19, 42,109.24 and 21,473.75

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Solution

The fourth proportional to 30,529.19, 42,109.24 and 21,473.75 is: 29,618.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,529.19 : 42,109.24 = 21,473.75 : x
  2. Step 2: Convert to fraction form
    30,529.19/42,109.24 = 21,473.75/x
  3. Step 3: Cross multiply
    30,529.19x = 42,109.24 × 21,473.75
  4. Step 4: Simplify right side
    30,529.19x = 904,243,424.57
  5. Step 5: Solve for x
    x = 904,243,424.57/30,529.19
  6. Step 6: Final answer
    x = 29,618.98

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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.