Home / 15,625.18-21,563.12-8,911.45

Finding the Fourth Proportional to 15,625.18, 21,563.12 and 8,911.45

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Solution

The fourth proportional to 15,625.18, 21,563.12 and 8,911.45 is: 12,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,625.18 : 21,563.12 = 8,911.45 : x
  2. Step 2: Convert to fraction form
    15,625.18/21,563.12 = 8,911.45/x
  3. Step 3: Cross multiply
    15,625.18x = 21,563.12 × 8,911.45
  4. Step 4: Simplify right side
    15,625.18x = 192,158,665.72
  5. Step 5: Solve for x
    x = 192,158,665.72/15,625.18
  6. Step 6: Final answer
    x = 12,298.01

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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.