Home / 15,393.07-21,242.45-8,319.51

Finding the Fourth Proportional to 15,393.07, 21,242.45 and 8,319.51

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Solution

The fourth proportional to 15,393.07, 21,242.45 and 8,319.51 is: 11,480.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.07 : 21,242.45 = 8,319.51 : x
  2. Step 2: Convert to fraction form
    15,393.07/21,242.45 = 8,319.51/x
  3. Step 3: Cross multiply
    15,393.07x = 21,242.45 × 8,319.51
  4. Step 4: Simplify right side
    15,393.07x = 176,726,796.00
  5. Step 5: Solve for x
    x = 176,726,796.00/15,393.07
  6. Step 6: Final answer
    x = 11,480.93

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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.