Home / 13,135.30-19,685.85-5,335

Finding the Fourth Proportional to 13,135.30, 19,685.85 and 5,335

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Solution

The fourth proportional to 13,135.30, 19,685.85 and 5,335 is: 7,995.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,135.30 : 19,685.85 = 5,335 : x
  2. Step 2: Convert to fraction form
    13,135.30/19,685.85 = 5,335/x
  3. Step 3: Cross multiply
    13,135.30x = 19,685.85 × 5,335
  4. Step 4: Simplify right side
    13,135.30x = 105,024,009.75
  5. Step 5: Solve for x
    x = 105,024,009.75/13,135.30
  6. Step 6: Final answer
    x = 7,995.55

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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.