Home / 15,358.59-21,190.61-8,643.83

Finding the Fourth Proportional to 15,358.59, 21,190.61 and 8,643.83

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Solution

The fourth proportional to 15,358.59, 21,190.61 and 8,643.83 is: 11,926.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,358.59 : 21,190.61 = 8,643.83 : x
  2. Step 2: Convert to fraction form
    15,358.59/21,190.61 = 8,643.83/x
  3. Step 3: Cross multiply
    15,358.59x = 21,190.61 × 8,643.83
  4. Step 4: Simplify right side
    15,358.59x = 183,167,946.09
  5. Step 5: Solve for x
    x = 183,167,946.09/15,358.59
  6. Step 6: Final answer
    x = 11,926.09

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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.