Home / 19,976.40-29,977.98-8,289.63

Finding the Fourth Proportional to 19,976.40, 29,977.98 and 8,289.63

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Solution

The fourth proportional to 19,976.40, 29,977.98 and 8,289.63 is: 12,440.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,976.40 : 29,977.98 = 8,289.63 : x
  2. Step 2: Convert to fraction form
    19,976.40/29,977.98 = 8,289.63/x
  3. Step 3: Cross multiply
    19,976.40x = 29,977.98 × 8,289.63
  4. Step 4: Simplify right side
    19,976.40x = 248,506,362.35
  5. Step 5: Solve for x
    x = 248,506,362.35/19,976.40
  6. Step 6: Final answer
    x = 12,440.00

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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.