Home / 30,990.06-42,762.90-17,561.08

Finding the Fourth Proportional to 30,990.06, 42,762.90 and 17,561.08

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Solution

The fourth proportional to 30,990.06, 42,762.90 and 17,561.08 is: 24,232.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,990.06 : 42,762.90 = 17,561.08 : x
  2. Step 2: Convert to fraction form
    30,990.06/42,762.90 = 17,561.08/x
  3. Step 3: Cross multiply
    30,990.06x = 42,762.90 × 17,561.08
  4. Step 4: Simplify right side
    30,990.06x = 750,962,707.93
  5. Step 5: Solve for x
    x = 750,962,707.93/30,990.06
  6. Step 6: Final answer
    x = 24,232.37

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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.