Home / 13,131.90-19,697.81-4,254.66

Finding the Fourth Proportional to 13,131.90, 19,697.81 and 4,254.66

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Solution

The fourth proportional to 13,131.90, 19,697.81 and 4,254.66 is: 6,381.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,131.90 : 19,697.81 = 4,254.66 : x
  2. Step 2: Convert to fraction form
    13,131.90/19,697.81 = 4,254.66/x
  3. Step 3: Cross multiply
    13,131.90x = 19,697.81 × 4,254.66
  4. Step 4: Simplify right side
    13,131.90x = 83,807,484.29
  5. Step 5: Solve for x
    x = 83,807,484.29/13,131.90
  6. Step 6: Final answer
    x = 6,381.98

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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.