Home / 19,416.86-29,130.95-7,731.80

Finding the Fourth Proportional to 19,416.86, 29,130.95 and 7,731.80

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Solution

The fourth proportional to 19,416.86, 29,130.95 and 7,731.80 is: 11,599.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,416.86 : 29,130.95 = 7,731.80 : x
  2. Step 2: Convert to fraction form
    19,416.86/29,130.95 = 7,731.80/x
  3. Step 3: Cross multiply
    19,416.86x = 29,130.95 × 7,731.80
  4. Step 4: Simplify right side
    19,416.86x = 225,234,533.56
  5. Step 5: Solve for x
    x = 225,234,533.56/19,416.86
  6. Step 6: Final answer
    x = 11,599.95

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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.