Home / 32,988.08-45,501-20,390.96

Finding the Fourth Proportional to 32,988.08, 45,501 and 20,390.96

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Solution

The fourth proportional to 32,988.08, 45,501 and 20,390.96 is: 28,125.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,988.08 : 45,501 = 20,390.96 : x
  2. Step 2: Convert to fraction form
    32,988.08/45,501 = 20,390.96/x
  3. Step 3: Cross multiply
    32,988.08x = 45,501 × 20,390.96
  4. Step 4: Simplify right side
    32,988.08x = 927,809,070.96
  5. Step 5: Solve for x
    x = 927,809,070.96/32,988.08
  6. Step 6: Final answer
    x = 28,125.59

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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.