Home / 25,218.40-37,822.80-7,688.80

Finding the Fourth Proportional to 25,218.40, 37,822.80 and 7,688.80

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Solution

The fourth proportional to 25,218.40, 37,822.80 and 7,688.80 is: 11,531.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,218.40 : 37,822.80 = 7,688.80 : x
  2. Step 2: Convert to fraction form
    25,218.40/37,822.80 = 7,688.80/x
  3. Step 3: Cross multiply
    25,218.40x = 37,822.80 × 7,688.80
  4. Step 4: Simplify right side
    25,218.40x = 290,811,944.64
  5. Step 5: Solve for x
    x = 290,811,944.64/25,218.40
  6. Step 6: Final answer
    x = 11,531.74

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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.