Home / 30,330.16-45,489.76-12,812.32

Finding the Fourth Proportional to 30,330.16, 45,489.76 and 12,812.32

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Solution

The fourth proportional to 30,330.16, 45,489.76 and 12,812.32 is: 19,216.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,330.16 : 45,489.76 = 12,812.32 : x
  2. Step 2: Convert to fraction form
    30,330.16/45,489.76 = 12,812.32/x
  3. Step 3: Cross multiply
    30,330.16x = 45,489.76 × 12,812.32
  4. Step 4: Simplify right side
    30,330.16x = 582,829,361.84
  5. Step 5: Solve for x
    x = 582,829,361.84/30,330.16
  6. Step 6: Final answer
    x = 19,216.17

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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.