Home / 30,731.42-42,420.83-17,988.63

Finding the Fourth Proportional to 30,731.42, 42,420.83 and 17,988.63

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Solution

The fourth proportional to 30,731.42, 42,420.83 and 17,988.63 is: 24,831.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,731.42 : 42,420.83 = 17,988.63 : x
  2. Step 2: Convert to fraction form
    30,731.42/42,420.83 = 17,988.63/x
  3. Step 3: Cross multiply
    30,731.42x = 42,420.83 × 17,988.63
  4. Step 4: Simplify right side
    30,731.42x = 763,092,525.22
  5. Step 5: Solve for x
    x = 763,092,525.22/30,731.42
  6. Step 6: Final answer
    x = 24,831.02

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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.