Home / 13,651.40-20,444.29-7,790.24

Finding the Fourth Proportional to 13,651.40, 20,444.29 and 7,790.24

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Solution

The fourth proportional to 13,651.40, 20,444.29 and 7,790.24 is: 11,666.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,651.40 : 20,444.29 = 7,790.24 : x
  2. Step 2: Convert to fraction form
    13,651.40/20,444.29 = 7,790.24/x
  3. Step 3: Cross multiply
    13,651.40x = 20,444.29 × 7,790.24
  4. Step 4: Simplify right side
    13,651.40x = 159,265,925.73
  5. Step 5: Solve for x
    x = 159,265,925.73/13,651.40
  6. Step 6: Final answer
    x = 11,666.64

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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.