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Finding the Fourth Proportional to 38,573.94, 57,860.28 and 12,278.30

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Solution

The fourth proportional to 38,573.94, 57,860.28 and 12,278.30 is: 18,417.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,573.94 : 57,860.28 = 12,278.30 : x
  2. Step 2: Convert to fraction form
    38,573.94/57,860.28 = 12,278.30/x
  3. Step 3: Cross multiply
    38,573.94x = 57,860.28 × 12,278.30
  4. Step 4: Simplify right side
    38,573.94x = 710,425,875.92
  5. Step 5: Solve for x
    x = 710,425,875.92/38,573.94
  6. Step 6: Final answer
    x = 18,417.25

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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.