Home / 13,705.27-18,913.30-7,417.64

Finding the Fourth Proportional to 13,705.27, 18,913.30 and 7,417.64

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Solution

The fourth proportional to 13,705.27, 18,913.30 and 7,417.64 is: 10,236.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.27 : 18,913.30 = 7,417.64 : x
  2. Step 2: Convert to fraction form
    13,705.27/18,913.30 = 7,417.64/x
  3. Step 3: Cross multiply
    13,705.27x = 18,913.30 × 7,417.64
  4. Step 4: Simplify right side
    13,705.27x = 140,292,079.35
  5. Step 5: Solve for x
    x = 140,292,079.35/13,705.27
  6. Step 6: Final answer
    x = 10,236.36

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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.