Home / 30,579.40-42,208.32-18,011.44

Finding the Fourth Proportional to 30,579.40, 42,208.32 and 18,011.44

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Solution

The fourth proportional to 30,579.40, 42,208.32 and 18,011.44 is: 24,860.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,579.40 : 42,208.32 = 18,011.44 : x
  2. Step 2: Convert to fraction form
    30,579.40/42,208.32 = 18,011.44/x
  3. Step 3: Cross multiply
    30,579.40x = 42,208.32 × 18,011.44
  4. Step 4: Simplify right side
    30,579.40x = 760,232,623.18
  5. Step 5: Solve for x
    x = 760,232,623.18/30,579.40
  6. Step 6: Final answer
    x = 24,860.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.