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Finding the Fourth Proportional to 15,064.72, 20,782.32 and 9,761.32

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Solution

The fourth proportional to 15,064.72, 20,782.32 and 9,761.32 is: 13,466.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,064.72 : 20,782.32 = 9,761.32 : x
  2. Step 2: Convert to fraction form
    15,064.72/20,782.32 = 9,761.32/x
  3. Step 3: Cross multiply
    15,064.72x = 20,782.32 × 9,761.32
  4. Step 4: Simplify right side
    15,064.72x = 202,862,875.86
  5. Step 5: Solve for x
    x = 202,862,875.86/15,064.72
  6. Step 6: Final answer
    x = 13,466.09

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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.