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Finding the Fourth Proportional to 32,805.60, 49,208.40 and 18,938.40

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Solution

The fourth proportional to 32,805.60, 49,208.40 and 18,938.40 is: 28,407.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,805.60 : 49,208.40 = 18,938.40 : x
  2. Step 2: Convert to fraction form
    32,805.60/49,208.40 = 18,938.40/x
  3. Step 3: Cross multiply
    32,805.60x = 49,208.40 × 18,938.40
  4. Step 4: Simplify right side
    32,805.60x = 931,928,362.56
  5. Step 5: Solve for x
    x = 931,928,362.56/32,805.60
  6. Step 6: Final answer
    x = 28,407.60

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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.