Home / 30,518.16-42,115.86-17,089.40

Finding the Fourth Proportional to 30,518.16, 42,115.86 and 17,089.40

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Solution

The fourth proportional to 30,518.16, 42,115.86 and 17,089.40 is: 23,583.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,518.16 : 42,115.86 = 17,089.40 : x
  2. Step 2: Convert to fraction form
    30,518.16/42,115.86 = 17,089.40/x
  3. Step 3: Cross multiply
    30,518.16x = 42,115.86 × 17,089.40
  4. Step 4: Simplify right side
    30,518.16x = 719,734,777.88
  5. Step 5: Solve for x
    x = 719,734,777.88/30,518.16
  6. Step 6: Final answer
    x = 23,583.82

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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.