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Finding the Fourth Proportional to 14,502.61, 20,012.93 and 8,215.03

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Solution

The fourth proportional to 14,502.61, 20,012.93 and 8,215.03 is: 11,336.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,502.61 : 20,012.93 = 8,215.03 : x
  2. Step 2: Convert to fraction form
    14,502.61/20,012.93 = 8,215.03/x
  3. Step 3: Cross multiply
    14,502.61x = 20,012.93 × 8,215.03
  4. Step 4: Simplify right side
    14,502.61x = 164,406,779.26
  5. Step 5: Solve for x
    x = 164,406,779.26/14,502.61
  6. Step 6: Final answer
    x = 11,336.36

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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.