Home / 30,378.15-45,590.58-19,845.32

Finding the Fourth Proportional to 30,378.15, 45,590.58 and 19,845.32

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Solution

The fourth proportional to 30,378.15, 45,590.58 and 19,845.32 is: 29,783.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,378.15 : 45,590.58 = 19,845.32 : x
  2. Step 2: Convert to fraction form
    30,378.15/45,590.58 = 19,845.32/x
  3. Step 3: Cross multiply
    30,378.15x = 45,590.58 × 19,845.32
  4. Step 4: Simplify right side
    30,378.15x = 904,759,421.13
  5. Step 5: Solve for x
    x = 904,759,421.13/30,378.15
  6. Step 6: Final answer
    x = 29,783.23

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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.