Home / 13,672.24-20,507.40-7,810.48

Finding the Fourth Proportional to 13,672.24, 20,507.40 and 7,810.48

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Solution

The fourth proportional to 13,672.24, 20,507.40 and 7,810.48 is: 11,715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,672.24 : 20,507.40 = 7,810.48 : x
  2. Step 2: Convert to fraction form
    13,672.24/20,507.40 = 7,810.48/x
  3. Step 3: Cross multiply
    13,672.24x = 20,507.40 × 7,810.48
  4. Step 4: Simplify right side
    13,672.24x = 160,172,637.55
  5. Step 5: Solve for x
    x = 160,172,637.55/13,672.24
  6. Step 6: Final answer
    x = 11,715.17

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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.