Home / 15,690.10-21,652.49-8,616.67

Finding the Fourth Proportional to 15,690.10, 21,652.49 and 8,616.67

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Solution

The fourth proportional to 15,690.10, 21,652.49 and 8,616.67 is: 11,891.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,690.10 : 21,652.49 = 8,616.67 : x
  2. Step 2: Convert to fraction form
    15,690.10/21,652.49 = 8,616.67/x
  3. Step 3: Cross multiply
    15,690.10x = 21,652.49 × 8,616.67
  4. Step 4: Simplify right side
    15,690.10x = 186,572,263.79
  5. Step 5: Solve for x
    x = 186,572,263.79/15,690.10
  6. Step 6: Final answer
    x = 11,891.08

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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.