Home / 21,632.01-29,855.16-12,681.72

Finding the Fourth Proportional to 21,632.01, 29,855.16 and 12,681.72

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Solution

The fourth proportional to 21,632.01, 29,855.16 and 12,681.72 is: 17,502.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,632.01 : 29,855.16 = 12,681.72 : x
  2. Step 2: Convert to fraction form
    21,632.01/29,855.16 = 12,681.72/x
  3. Step 3: Cross multiply
    21,632.01x = 29,855.16 × 12,681.72
  4. Step 4: Simplify right side
    21,632.01x = 378,614,779.68
  5. Step 5: Solve for x
    x = 378,614,779.68/21,632.01
  6. Step 6: Final answer
    x = 17,502.52

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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.