Home / 10,919.13-16,384.59-4,345.40

Finding the Fourth Proportional to 10,919.13, 16,384.59 and 4,345.40

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Solution

The fourth proportional to 10,919.13, 16,384.59 and 4,345.40 is: 6,520.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,919.13 : 16,384.59 = 4,345.40 : x
  2. Step 2: Convert to fraction form
    10,919.13/16,384.59 = 4,345.40/x
  3. Step 3: Cross multiply
    10,919.13x = 16,384.59 × 4,345.40
  4. Step 4: Simplify right side
    10,919.13x = 71,197,515.46
  5. Step 5: Solve for x
    x = 71,197,515.46/10,919.13
  6. Step 6: Final answer
    x = 6,520.44

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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.