Home / 30,782.04-42,462.30-18,204.36

Finding the Fourth Proportional to 30,782.04, 42,462.30 and 18,204.36

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Solution

The fourth proportional to 30,782.04, 42,462.30 and 18,204.36 is: 25,112.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,782.04 : 42,462.30 = 18,204.36 : x
  2. Step 2: Convert to fraction form
    30,782.04/42,462.30 = 18,204.36/x
  3. Step 3: Cross multiply
    30,782.04x = 42,462.30 × 18,204.36
  4. Step 4: Simplify right side
    30,782.04x = 772,998,995.63
  5. Step 5: Solve for x
    x = 772,998,995.63/30,782.04
  6. Step 6: Final answer
    x = 25,112.01

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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.