Home / 15,889.23-21,927.51-8,815.50

Finding the Fourth Proportional to 15,889.23, 21,927.51 and 8,815.50

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Solution

The fourth proportional to 15,889.23, 21,927.51 and 8,815.50 is: 12,165.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,889.23 : 21,927.51 = 8,815.50 : x
  2. Step 2: Convert to fraction form
    15,889.23/21,927.51 = 8,815.50/x
  3. Step 3: Cross multiply
    15,889.23x = 21,927.51 × 8,815.50
  4. Step 4: Simplify right side
    15,889.23x = 193,301,964.41
  5. Step 5: Solve for x
    x = 193,301,964.41/15,889.23
  6. Step 6: Final answer
    x = 12,165.60

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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.