Home / 15,625.74-21,560.94-8,911.50

Finding the Fourth Proportional to 15,625.74, 21,560.94 and 8,911.50

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Solution

The fourth proportional to 15,625.74, 21,560.94 and 8,911.50 is: 12,296.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625.74 : 21,560.94 = 8,911.50 : x
  2. Step 2: Convert to fraction form
    15,625.74/21,560.94 = 8,911.50/x
  3. Step 3: Cross multiply
    15,625.74x = 21,560.94 × 8,911.50
  4. Step 4: Simplify right side
    15,625.74x = 192,140,316.81
  5. Step 5: Solve for x
    x = 192,140,316.81/15,625.74
  6. Step 6: Final answer
    x = 12,296.40

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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.