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Finding the Fourth Proportional to 12,698.53, 17,523.93 and 7,320.93

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Solution

The fourth proportional to 12,698.53, 17,523.93 and 7,320.93 is: 10,102.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,698.53 : 17,523.93 = 7,320.93 : x
  2. Step 2: Convert to fraction form
    12,698.53/17,523.93 = 7,320.93/x
  3. Step 3: Cross multiply
    12,698.53x = 17,523.93 × 7,320.93
  4. Step 4: Simplify right side
    12,698.53x = 128,291,483.99
  5. Step 5: Solve for x
    x = 128,291,483.99/12,698.53
  6. Step 6: Final answer
    x = 10,102.86

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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.