Home / 30,985.17-42,759.41-17,558.99

Finding the Fourth Proportional to 30,985.17, 42,759.41 and 17,558.99

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Solution

The fourth proportional to 30,985.17, 42,759.41 and 17,558.99 is: 24,231.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,985.17 : 42,759.41 = 17,558.99 : x
  2. Step 2: Convert to fraction form
    30,985.17/42,759.41 = 17,558.99/x
  3. Step 3: Cross multiply
    30,985.17x = 42,759.41 × 17,558.99
  4. Step 4: Simplify right side
    30,985.17x = 750,812,052.60
  5. Step 5: Solve for x
    x = 750,812,052.60/30,985.17
  6. Step 6: Final answer
    x = 24,231.34

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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.