Home / 30,661.02-42,284.91-19,895.62

Finding the Fourth Proportional to 30,661.02, 42,284.91 and 19,895.62

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Solution

The fourth proportional to 30,661.02, 42,284.91 and 19,895.62 is: 27,438.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,661.02 : 42,284.91 = 19,895.62 : x
  2. Step 2: Convert to fraction form
    30,661.02/42,284.91 = 19,895.62/x
  3. Step 3: Cross multiply
    30,661.02x = 42,284.91 × 19,895.62
  4. Step 4: Simplify right side
    30,661.02x = 841,284,469.99
  5. Step 5: Solve for x
    x = 841,284,469.99/30,661.02
  6. Step 6: Final answer
    x = 27,438.24

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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.