Home / 22,384.09-30,890.80-12,312.96

Finding the Fourth Proportional to 22,384.09, 30,890.80 and 12,312.96

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Solution

The fourth proportional to 22,384.09, 30,890.80 and 12,312.96 is: 16,992.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,384.09 : 30,890.80 = 12,312.96 : x
  2. Step 2: Convert to fraction form
    22,384.09/30,890.80 = 12,312.96/x
  3. Step 3: Cross multiply
    22,384.09x = 30,890.80 × 12,312.96
  4. Step 4: Simplify right side
    22,384.09x = 380,357,184.77
  5. Step 5: Solve for x
    x = 380,357,184.77/22,384.09
  6. Step 6: Final answer
    x = 16,992.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.