Home / 30,678.06-46,018.11-8,489.58

Finding the Fourth Proportional to 30,678.06, 46,018.11 and 8,489.58

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Solution

The fourth proportional to 30,678.06, 46,018.11 and 8,489.58 is: 12,734.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,678.06 : 46,018.11 = 8,489.58 : x
  2. Step 2: Convert to fraction form
    30,678.06/46,018.11 = 8,489.58/x
  3. Step 3: Cross multiply
    30,678.06x = 46,018.11 × 8,489.58
  4. Step 4: Simplify right side
    30,678.06x = 390,674,426.29
  5. Step 5: Solve for x
    x = 390,674,426.29/30,678.06
  6. Step 6: Final answer
    x = 12,734.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.