Home / 15,678.52-21,632.32-9,386.44

Finding the Fourth Proportional to 15,678.52, 21,632.32 and 9,386.44

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Solution

The fourth proportional to 15,678.52, 21,632.32 and 9,386.44 is: 12,950.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,678.52 : 21,632.32 = 9,386.44 : x
  2. Step 2: Convert to fraction form
    15,678.52/21,632.32 = 9,386.44/x
  3. Step 3: Cross multiply
    15,678.52x = 21,632.32 × 9,386.44
  4. Step 4: Simplify right side
    15,678.52x = 203,050,473.74
  5. Step 5: Solve for x
    x = 203,050,473.74/15,678.52
  6. Step 6: Final answer
    x = 12,950.87

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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.