Home / 30,815.90-46,223.85-12,360.86

Finding the Fourth Proportional to 30,815.90, 46,223.85 and 12,360.86

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Solution

The fourth proportional to 30,815.90, 46,223.85 and 12,360.86 is: 18,541.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,815.90 : 46,223.85 = 12,360.86 : x
  2. Step 2: Convert to fraction form
    30,815.90/46,223.85 = 12,360.86/x
  3. Step 3: Cross multiply
    30,815.90x = 46,223.85 × 12,360.86
  4. Step 4: Simplify right side
    30,815.90x = 571,366,538.51
  5. Step 5: Solve for x
    x = 571,366,538.51/30,815.90
  6. Step 6: Final answer
    x = 18,541.29

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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.