Home / 15,533.51-21,435.50-8,818.22

Finding the Fourth Proportional to 15,533.51, 21,435.50 and 8,818.22

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Solution

The fourth proportional to 15,533.51, 21,435.50 and 8,818.22 is: 12,168.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,533.51 : 21,435.50 = 8,818.22 : x
  2. Step 2: Convert to fraction form
    15,533.51/21,435.50 = 8,818.22/x
  3. Step 3: Cross multiply
    15,533.51x = 21,435.50 × 8,818.22
  4. Step 4: Simplify right side
    15,533.51x = 189,023,064.12
  5. Step 5: Solve for x
    x = 189,023,064.12/15,533.51
  6. Step 6: Final answer
    x = 12,168.73

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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.