Home / 15,438.72-21,305.45-9,064.06

Finding the Fourth Proportional to 15,438.72, 21,305.45 and 9,064.06

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Solution

The fourth proportional to 15,438.72, 21,305.45 and 9,064.06 is: 12,508.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,438.72 : 21,305.45 = 9,064.06 : x
  2. Step 2: Convert to fraction form
    15,438.72/21,305.45 = 9,064.06/x
  3. Step 3: Cross multiply
    15,438.72x = 21,305.45 × 9,064.06
  4. Step 4: Simplify right side
    15,438.72x = 193,113,877.13
  5. Step 5: Solve for x
    x = 193,113,877.13/15,438.72
  6. Step 6: Final answer
    x = 12,508.41

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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.