Home / 20,426.10-30,624.74-7,935.72

Finding the Fourth Proportional to 20,426.10, 30,624.74 and 7,935.72

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Solution

The fourth proportional to 20,426.10, 30,624.74 and 7,935.72 is: 11,897.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,426.10 : 30,624.74 = 7,935.72 : x
  2. Step 2: Convert to fraction form
    20,426.10/30,624.74 = 7,935.72/x
  3. Step 3: Cross multiply
    20,426.10x = 30,624.74 × 7,935.72
  4. Step 4: Simplify right side
    20,426.10x = 243,029,361.71
  5. Step 5: Solve for x
    x = 243,029,361.71/20,426.10
  6. Step 6: Final answer
    x = 11,897.98

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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.