Home / 13,989.08-19,305.06-7,701.68

Finding the Fourth Proportional to 13,989.08, 19,305.06 and 7,701.68

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Solution

The fourth proportional to 13,989.08, 19,305.06 and 7,701.68 is: 10,628.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.08 : 19,305.06 = 7,701.68 : x
  2. Step 2: Convert to fraction form
    13,989.08/19,305.06 = 7,701.68/x
  3. Step 3: Cross multiply
    13,989.08x = 19,305.06 × 7,701.68
  4. Step 4: Simplify right side
    13,989.08x = 148,681,394.50
  5. Step 5: Solve for x
    x = 148,681,394.50/13,989.08
  6. Step 6: Final answer
    x = 10,628.39

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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.