Home / 30,612.24-42,239.88-18,035.28

Finding the Fourth Proportional to 30,612.24, 42,239.88 and 18,035.28

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Solution

The fourth proportional to 30,612.24, 42,239.88 and 18,035.28 is: 24,885.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,612.24 : 42,239.88 = 18,035.28 : x
  2. Step 2: Convert to fraction form
    30,612.24/42,239.88 = 18,035.28/x
  3. Step 3: Cross multiply
    30,612.24x = 42,239.88 × 18,035.28
  4. Step 4: Simplify right side
    30,612.24x = 761,808,062.97
  5. Step 5: Solve for x
    x = 761,808,062.97/30,612.24
  6. Step 6: Final answer
    x = 24,885.73

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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.