Home / 30,902.40-46,427.58-19,830.78

Finding the Fourth Proportional to 30,902.40, 46,427.58 and 19,830.78

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Solution

The fourth proportional to 30,902.40, 46,427.58 and 19,830.78 is: 29,793.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,902.40 : 46,427.58 = 19,830.78 : x
  2. Step 2: Convert to fraction form
    30,902.40/46,427.58 = 19,830.78/x
  3. Step 3: Cross multiply
    30,902.40x = 46,427.58 × 19,830.78
  4. Step 4: Simplify right side
    30,902.40x = 920,695,124.91
  5. Step 5: Solve for x
    x = 920,695,124.91/30,902.40
  6. Step 6: Final answer
    x = 29,793.64

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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.