Home / 12,417.04-18,620.70-7,730.20

Finding the Fourth Proportional to 12,417.04, 18,620.70 and 7,730.20

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Solution

The fourth proportional to 12,417.04, 18,620.70 and 7,730.20 is: 11,592.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,417.04 : 18,620.70 = 7,730.20 : x
  2. Step 2: Convert to fraction form
    12,417.04/18,620.70 = 7,730.20/x
  3. Step 3: Cross multiply
    12,417.04x = 18,620.70 × 7,730.20
  4. Step 4: Simplify right side
    12,417.04x = 143,941,735.14
  5. Step 5: Solve for x
    x = 143,941,735.14/12,417.04
  6. Step 6: Final answer
    x = 11,592.27

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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.