Home / 12,526.99-17,289.55-7,149.40

Finding the Fourth Proportional to 12,526.99, 17,289.55 and 7,149.40

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Solution

The fourth proportional to 12,526.99, 17,289.55 and 7,149.40 is: 9,867.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,526.99 : 17,289.55 = 7,149.40 : x
  2. Step 2: Convert to fraction form
    12,526.99/17,289.55 = 7,149.40/x
  3. Step 3: Cross multiply
    12,526.99x = 17,289.55 × 7,149.40
  4. Step 4: Simplify right side
    12,526.99x = 123,609,874.48
  5. Step 5: Solve for x
    x = 123,609,874.48/12,526.99
  6. Step 6: Final answer
    x = 9,867.49

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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.