Home / 30,687.84-42,349.28-17,259.12

Finding the Fourth Proportional to 30,687.84, 42,349.28 and 17,259.12

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Solution

The fourth proportional to 30,687.84, 42,349.28 and 17,259.12 is: 23,817.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,687.84 : 42,349.28 = 17,259.12 : x
  2. Step 2: Convert to fraction form
    30,687.84/42,349.28 = 17,259.12/x
  3. Step 3: Cross multiply
    30,687.84x = 42,349.28 × 17,259.12
  4. Step 4: Simplify right side
    30,687.84x = 730,911,219.14
  5. Step 5: Solve for x
    x = 730,911,219.14/30,687.84
  6. Step 6: Final answer
    x = 23,817.62

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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.