Home / 25,561.68-38,319.84-9,990.24

Finding the Fourth Proportional to 25,561.68, 38,319.84 and 9,990.24

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Solution

The fourth proportional to 25,561.68, 38,319.84 and 9,990.24 is: 14,976.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,561.68 : 38,319.84 = 9,990.24 : x
  2. Step 2: Convert to fraction form
    25,561.68/38,319.84 = 9,990.24/x
  3. Step 3: Cross multiply
    25,561.68x = 38,319.84 × 9,990.24
  4. Step 4: Simplify right side
    25,561.68x = 382,824,398.36
  5. Step 5: Solve for x
    x = 382,824,398.36/25,561.68
  6. Step 6: Final answer
    x = 14,976.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.