Home / 15,438.02-21,305.30-8,723.93

Finding the Fourth Proportional to 15,438.02, 21,305.30 and 8,723.93

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Solution

The fourth proportional to 15,438.02, 21,305.30 and 8,723.93 is: 12,039.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.02 : 21,305.30 = 8,723.93 : x
  2. Step 2: Convert to fraction form
    15,438.02/21,305.30 = 8,723.93/x
  3. Step 3: Cross multiply
    15,438.02x = 21,305.30 × 8,723.93
  4. Step 4: Simplify right side
    15,438.02x = 185,865,945.83
  5. Step 5: Solve for x
    x = 185,865,945.83/15,438.02
  6. Step 6: Final answer
    x = 12,039.49

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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.