Home / 13,655.51-20,487.11-12,354.24

Finding the Fourth Proportional to 13,655.51, 20,487.11 and 12,354.24

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Solution

The fourth proportional to 13,655.51, 20,487.11 and 12,354.24 is: 18,534.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,655.51 : 20,487.11 = 12,354.24 : x
  2. Step 2: Convert to fraction form
    13,655.51/20,487.11 = 12,354.24/x
  3. Step 3: Cross multiply
    13,655.51x = 20,487.11 × 12,354.24
  4. Step 4: Simplify right side
    13,655.51x = 253,102,612.08
  5. Step 5: Solve for x
    x = 253,102,612.08/13,655.51
  6. Step 6: Final answer
    x = 18,534.84

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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.