Home / 13,125.78-19,688.67-5,335.20

Finding the Fourth Proportional to 13,125.78, 19,688.67 and 5,335.20

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Solution

The fourth proportional to 13,125.78, 19,688.67 and 5,335.20 is: 8,002.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,125.78 : 19,688.67 = 5,335.20 : x
  2. Step 2: Convert to fraction form
    13,125.78/19,688.67 = 5,335.20/x
  3. Step 3: Cross multiply
    13,125.78x = 19,688.67 × 5,335.20
  4. Step 4: Simplify right side
    13,125.78x = 105,042,992.18
  5. Step 5: Solve for x
    x = 105,042,992.18/13,125.78
  6. Step 6: Final answer
    x = 8,002.80

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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.