Home / 30,715.10-42,388.20-17,287.22

Finding the Fourth Proportional to 30,715.10, 42,388.20 and 17,287.22

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Solution

The fourth proportional to 30,715.10, 42,388.20 and 17,287.22 is: 23,857.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,715.10 : 42,388.20 = 17,287.22 : x
  2. Step 2: Convert to fraction form
    30,715.10/42,388.20 = 17,287.22/x
  3. Step 3: Cross multiply
    30,715.10x = 42,388.20 × 17,287.22
  4. Step 4: Simplify right side
    30,715.10x = 732,774,356.67
  5. Step 5: Solve for x
    x = 732,774,356.67/30,715.10
  6. Step 6: Final answer
    x = 23,857.14

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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.