Home / 12,528.04-17,288.94-7,221.96

Finding the Fourth Proportional to 12,528.04, 17,288.94 and 7,221.96

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Solution

The fourth proportional to 12,528.04, 17,288.94 and 7,221.96 is: 9,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,528.04 : 17,288.94 = 7,221.96 : x
  2. Step 2: Convert to fraction form
    12,528.04/17,288.94 = 7,221.96/x
  3. Step 3: Cross multiply
    12,528.04x = 17,288.94 × 7,221.96
  4. Step 4: Simplify right side
    12,528.04x = 124,860,033.12
  5. Step 5: Solve for x
    x = 124,860,033.12/12,528.04
  6. Step 6: Final answer
    x = 9,966.45

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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.