Home / 15,861.56-21,889.86-9,574.88

Finding the Fourth Proportional to 15,861.56, 21,889.86 and 9,574.88

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Solution

The fourth proportional to 15,861.56, 21,889.86 and 9,574.88 is: 13,213.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,861.56 : 21,889.86 = 9,574.88 : x
  2. Step 2: Convert to fraction form
    15,861.56/21,889.86 = 9,574.88/x
  3. Step 3: Cross multiply
    15,861.56x = 21,889.86 × 9,574.88
  4. Step 4: Simplify right side
    15,861.56x = 209,592,782.72
  5. Step 5: Solve for x
    x = 209,592,782.72/15,861.56
  6. Step 6: Final answer
    x = 13,213.88

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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.