Home / 42,823.20-64,234.80-13,240.38

Finding the Fourth Proportional to 42,823.20, 64,234.80 and 13,240.38

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Solution

The fourth proportional to 42,823.20, 64,234.80 and 13,240.38 is: 19,860.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,823.20 : 64,234.80 = 13,240.38 : x
  2. Step 2: Convert to fraction form
    42,823.20/64,234.80 = 13,240.38/x
  3. Step 3: Cross multiply
    42,823.20x = 64,234.80 × 13,240.38
  4. Step 4: Simplify right side
    42,823.20x = 850,492,920.34
  5. Step 5: Solve for x
    x = 850,492,920.34/42,823.20
  6. Step 6: Final answer
    x = 19,860.57

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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.