Home / 13,090.08-18,056.52-12,215.28

Finding the Fourth Proportional to 13,090.08, 18,056.52 and 12,215.28

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Solution

The fourth proportional to 13,090.08, 18,056.52 and 12,215.28 is: 16,849.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,090.08 : 18,056.52 = 12,215.28 : x
  2. Step 2: Convert to fraction form
    13,090.08/18,056.52 = 12,215.28/x
  3. Step 3: Cross multiply
    13,090.08x = 18,056.52 × 12,215.28
  4. Step 4: Simplify right side
    13,090.08x = 220,565,447.63
  5. Step 5: Solve for x
    x = 220,565,447.63/13,090.08
  6. Step 6: Final answer
    x = 16,849.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.