Home / 30,908.40-42,653.21-16,761.07

Finding the Fourth Proportional to 30,908.40, 42,653.21 and 16,761.07

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Solution

The fourth proportional to 30,908.40, 42,653.21 and 16,761.07 is: 23,130.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,908.40 : 42,653.21 = 16,761.07 : x
  2. Step 2: Convert to fraction form
    30,908.40/42,653.21 = 16,761.07/x
  3. Step 3: Cross multiply
    30,908.40x = 42,653.21 × 16,761.07
  4. Step 4: Simplify right side
    30,908.40x = 714,913,438.53
  5. Step 5: Solve for x
    x = 714,913,438.53/30,908.40
  6. Step 6: Final answer
    x = 23,130.07

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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.