Home / 18,312.50-27,474.21-12,985.94

Finding the Fourth Proportional to 18,312.50, 27,474.21 and 12,985.94

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Solution

The fourth proportional to 18,312.50, 27,474.21 and 12,985.94 is: 19,482.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,312.50 : 27,474.21 = 12,985.94 : x
  2. Step 2: Convert to fraction form
    18,312.50/27,474.21 = 12,985.94/x
  3. Step 3: Cross multiply
    18,312.50x = 27,474.21 × 12,985.94
  4. Step 4: Simplify right side
    18,312.50x = 356,778,442.61
  5. Step 5: Solve for x
    x = 356,778,442.61/18,312.50
  6. Step 6: Final answer
    x = 19,482.78

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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.