Home / 15,693.48-21,609.64-13,565.24

Finding the Fourth Proportional to 15,693.48, 21,609.64 and 13,565.24

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Solution

The fourth proportional to 15,693.48, 21,609.64 and 13,565.24 is: 18,679.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,693.48 : 21,609.64 = 13,565.24 : x
  2. Step 2: Convert to fraction form
    15,693.48/21,609.64 = 13,565.24/x
  3. Step 3: Cross multiply
    15,693.48x = 21,609.64 × 13,565.24
  4. Step 4: Simplify right side
    15,693.48x = 293,139,952.91
  5. Step 5: Solve for x
    x = 293,139,952.91/15,693.48
  6. Step 6: Final answer
    x = 18,679.09

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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.