Home / 13,405.64-20,110.28-5,612.63

Finding the Fourth Proportional to 13,405.64, 20,110.28 and 5,612.63

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Solution

The fourth proportional to 13,405.64, 20,110.28 and 5,612.63 is: 8,419.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,405.64 : 20,110.28 = 5,612.63 : x
  2. Step 2: Convert to fraction form
    13,405.64/20,110.28 = 5,612.63/x
  3. Step 3: Cross multiply
    13,405.64x = 20,110.28 × 5,612.63
  4. Step 4: Simplify right side
    13,405.64x = 112,871,432.22
  5. Step 5: Solve for x
    x = 112,871,432.22/13,405.64
  6. Step 6: Final answer
    x = 8,419.70

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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.