Home / 30,915.53-46,342.14-12,188.32

Finding the Fourth Proportional to 30,915.53, 46,342.14 and 12,188.32

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Solution

The fourth proportional to 30,915.53, 46,342.14 and 12,188.32 is: 18,270.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,915.53 : 46,342.14 = 12,188.32 : x
  2. Step 2: Convert to fraction form
    30,915.53/46,342.14 = 12,188.32/x
  3. Step 3: Cross multiply
    30,915.53x = 46,342.14 × 12,188.32
  4. Step 4: Simplify right side
    30,915.53x = 564,832,831.80
  5. Step 5: Solve for x
    x = 564,832,831.80/30,915.53
  6. Step 6: Final answer
    x = 18,270.20

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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.