Home / 30,655.41-42,304.75-18,556.17

Finding the Fourth Proportional to 30,655.41, 42,304.75 and 18,556.17

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Solution

The fourth proportional to 30,655.41, 42,304.75 and 18,556.17 is: 25,607.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,655.41 : 42,304.75 = 18,556.17 : x
  2. Step 2: Convert to fraction form
    30,655.41/42,304.75 = 18,556.17/x
  3. Step 3: Cross multiply
    30,655.41x = 42,304.75 × 18,556.17
  4. Step 4: Simplify right side
    30,655.41x = 785,014,165.74
  5. Step 5: Solve for x
    x = 785,014,165.74/30,655.41
  6. Step 6: Final answer
    x = 25,607.69

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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.