Home / 13,691.18-20,437.74-12,030.44

Finding the Fourth Proportional to 13,691.18, 20,437.74 and 12,030.44

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Solution

The fourth proportional to 13,691.18, 20,437.74 and 12,030.44 is: 17,958.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,691.18 : 20,437.74 = 12,030.44 : x
  2. Step 2: Convert to fraction form
    13,691.18/20,437.74 = 12,030.44/x
  3. Step 3: Cross multiply
    13,691.18x = 20,437.74 × 12,030.44
  4. Step 4: Simplify right side
    13,691.18x = 245,875,004.81
  5. Step 5: Solve for x
    x = 245,875,004.81/13,691.18
  6. Step 6: Final answer
    x = 17,958.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.