Home / 30,970.07-42,738.71-16,822.92

Finding the Fourth Proportional to 30,970.07, 42,738.71 and 16,822.92

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Solution

The fourth proportional to 30,970.07, 42,738.71 and 16,822.92 is: 23,215.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,970.07 : 42,738.71 = 16,822.92 : x
  2. Step 2: Convert to fraction form
    30,970.07/42,738.71 = 16,822.92/x
  3. Step 3: Cross multiply
    30,970.07x = 42,738.71 × 16,822.92
  4. Step 4: Simplify right side
    30,970.07x = 718,989,815.12
  5. Step 5: Solve for x
    x = 718,989,815.12/30,970.07
  6. Step 6: Final answer
    x = 23,215.64

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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.