Home / 32,638.75-45,055.71-20,720.41

Finding the Fourth Proportional to 32,638.75, 45,055.71 and 20,720.41

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Solution

The fourth proportional to 32,638.75, 45,055.71 and 20,720.41 is: 28,603.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,638.75 : 45,055.71 = 20,720.41 : x
  2. Step 2: Convert to fraction form
    32,638.75/45,055.71 = 20,720.41/x
  3. Step 3: Cross multiply
    32,638.75x = 45,055.71 × 20,720.41
  4. Step 4: Simplify right side
    32,638.75x = 933,572,784.04
  5. Step 5: Solve for x
    x = 933,572,784.04/32,638.75
  6. Step 6: Final answer
    x = 28,603.20

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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.