Home / 28,555.96-39,419.58-21,484.12

Finding the Fourth Proportional to 28,555.96, 39,419.58 and 21,484.12

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Solution

The fourth proportional to 28,555.96, 39,419.58 and 21,484.12 is: 29,657.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,555.96 : 39,419.58 = 21,484.12 : x
  2. Step 2: Convert to fraction form
    28,555.96/39,419.58 = 21,484.12/x
  3. Step 3: Cross multiply
    28,555.96x = 39,419.58 × 21,484.12
  4. Step 4: Simplify right side
    28,555.96x = 846,894,987.07
  5. Step 5: Solve for x
    x = 846,894,987.07/28,555.96
  6. Step 6: Final answer
    x = 29,657.38

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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.