Home / 38,637.60-57,994.80-18,938.40

Finding the Fourth Proportional to 38,637.60, 57,994.80 and 18,938.40

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Solution

The fourth proportional to 38,637.60, 57,994.80 and 18,938.40 is: 28,426.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,637.60 : 57,994.80 = 18,938.40 : x
  2. Step 2: Convert to fraction form
    38,637.60/57,994.80 = 18,938.40/x
  3. Step 3: Cross multiply
    38,637.60x = 57,994.80 × 18,938.40
  4. Step 4: Simplify right side
    38,637.60x = 1,098,328,720.32
  5. Step 5: Solve for x
    x = 1,098,328,720.32/38,637.60
  6. Step 6: Final answer
    x = 28,426.42

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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.