Home / 15,393.24-21,242.70-8,678.93

Finding the Fourth Proportional to 15,393.24, 21,242.70 and 8,678.93

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Solution

The fourth proportional to 15,393.24, 21,242.70 and 8,678.93 is: 11,976.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,393.24 : 21,242.70 = 8,678.93 : x
  2. Step 2: Convert to fraction form
    15,393.24/21,242.70 = 8,678.93/x
  3. Step 3: Cross multiply
    15,393.24x = 21,242.70 × 8,678.93
  4. Step 4: Simplify right side
    15,393.24x = 184,363,800.10
  5. Step 5: Solve for x
    x = 184,363,800.10/15,393.24
  6. Step 6: Final answer
    x = 11,976.93

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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.