Home / 28,987.86-43,496.38-21,607.14

Finding the Fourth Proportional to 28,987.86, 43,496.38 and 21,607.14

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Solution

The fourth proportional to 28,987.86, 43,496.38 and 21,607.14 is: 32,421.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,987.86 : 43,496.38 = 21,607.14 : x
  2. Step 2: Convert to fraction form
    28,987.86/43,496.38 = 21,607.14/x
  3. Step 3: Cross multiply
    28,987.86x = 43,496.38 × 21,607.14
  4. Step 4: Simplify right side
    28,987.86x = 939,832,372.15
  5. Step 5: Solve for x
    x = 939,832,372.15/28,987.86
  6. Step 6: Final answer
    x = 32,421.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.