Home / 32,720.58-45,140.94-20,779.56

Finding the Fourth Proportional to 32,720.58, 45,140.94 and 20,779.56

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Solution

The fourth proportional to 32,720.58, 45,140.94 and 20,779.56 is: 28,667.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,720.58 : 45,140.94 = 20,779.56 : x
  2. Step 2: Convert to fraction form
    32,720.58/45,140.94 = 20,779.56/x
  3. Step 3: Cross multiply
    32,720.58x = 45,140.94 × 20,779.56
  4. Step 4: Simplify right side
    32,720.58x = 938,008,871.19
  5. Step 5: Solve for x
    x = 938,008,871.19/32,720.58
  6. Step 6: Final answer
    x = 28,667.24

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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.