Home / 12,988.02-17,923.26-7,322.78

Finding the Fourth Proportional to 12,988.02, 17,923.26 and 7,322.78

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Solution

The fourth proportional to 12,988.02, 17,923.26 and 7,322.78 is: 10,105.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,988.02 : 17,923.26 = 7,322.78 : x
  2. Step 2: Convert to fraction form
    12,988.02/17,923.26 = 7,322.78/x
  3. Step 3: Cross multiply
    12,988.02x = 17,923.26 × 7,322.78
  4. Step 4: Simplify right side
    12,988.02x = 131,248,101.42
  5. Step 5: Solve for x
    x = 131,248,101.42/12,988.02
  6. Step 6: Final answer
    x = 10,105.32

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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.