Home / 15,519.93-21,417.95-8,446.80

Finding the Fourth Proportional to 15,519.93, 21,417.95 and 8,446.80

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Solution

The fourth proportional to 15,519.93, 21,417.95 and 8,446.80 is: 11,656.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,519.93 : 21,417.95 = 8,446.80 : x
  2. Step 2: Convert to fraction form
    15,519.93/21,417.95 = 8,446.80/x
  3. Step 3: Cross multiply
    15,519.93x = 21,417.95 × 8,446.80
  4. Step 4: Simplify right side
    15,519.93x = 180,913,140.06
  5. Step 5: Solve for x
    x = 180,913,140.06/15,519.93
  6. Step 6: Final answer
    x = 11,656.83

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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.