Home / 11,928.08-16,461.15-6,622.40

Finding the Fourth Proportional to 11,928.08, 16,461.15 and 6,622.40

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Solution

The fourth proportional to 11,928.08, 16,461.15 and 6,622.40 is: 9,139.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,928.08 : 16,461.15 = 6,622.40 : x
  2. Step 2: Convert to fraction form
    11,928.08/16,461.15 = 6,622.40/x
  3. Step 3: Cross multiply
    11,928.08x = 16,461.15 × 6,622.40
  4. Step 4: Simplify right side
    11,928.08x = 109,012,319.76
  5. Step 5: Solve for x
    x = 109,012,319.76/11,928.08
  6. Step 6: Final answer
    x = 9,139.13

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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.