Home / 13,187.90-19,783.39-4,636.72

Finding the Fourth Proportional to 13,187.90, 19,783.39 and 4,636.72

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Solution

The fourth proportional to 13,187.90, 19,783.39 and 4,636.72 is: 6,955.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,187.90 : 19,783.39 = 4,636.72 : x
  2. Step 2: Convert to fraction form
    13,187.90/19,783.39 = 4,636.72/x
  3. Step 3: Cross multiply
    13,187.90x = 19,783.39 × 4,636.72
  4. Step 4: Simplify right side
    13,187.90x = 91,730,040.08
  5. Step 5: Solve for x
    x = 91,730,040.08/13,187.90
  6. Step 6: Final answer
    x = 6,955.62

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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.