Home / 12,847.80-19,271.70-8,470.20

Finding the Fourth Proportional to 12,847.80, 19,271.70 and 8,470.20

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Solution

The fourth proportional to 12,847.80, 19,271.70 and 8,470.20 is: 12,705.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,847.80 : 19,271.70 = 8,470.20 : x
  2. Step 2: Convert to fraction form
    12,847.80/19,271.70 = 8,470.20/x
  3. Step 3: Cross multiply
    12,847.80x = 19,271.70 × 8,470.20
  4. Step 4: Simplify right side
    12,847.80x = 163,235,153.34
  5. Step 5: Solve for x
    x = 163,235,153.34/12,847.80
  6. Step 6: Final answer
    x = 12,705.30

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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.