Home / 48,579.32-72,870.40-13,518.98

Finding the Fourth Proportional to 48,579.32, 72,870.40 and 13,518.98

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Solution

The fourth proportional to 48,579.32, 72,870.40 and 13,518.98 is: 20,278.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,579.32 : 72,870.40 = 13,518.98 : x
  2. Step 2: Convert to fraction form
    48,579.32/72,870.40 = 13,518.98/x
  3. Step 3: Cross multiply
    48,579.32x = 72,870.40 × 13,518.98
  4. Step 4: Simplify right side
    48,579.32x = 985,133,480.19
  5. Step 5: Solve for x
    x = 985,133,480.19/48,579.32
  6. Step 6: Final answer
    x = 20,278.87

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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.