Home / 30,975.80-42,746.10-16,828.88

Finding the Fourth Proportional to 30,975.80, 42,746.10 and 16,828.88

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Solution

The fourth proportional to 30,975.80, 42,746.10 and 16,828.88 is: 23,223.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,975.80 : 42,746.10 = 16,828.88 : x
  2. Step 2: Convert to fraction form
    30,975.80/42,746.10 = 16,828.88/x
  3. Step 3: Cross multiply
    30,975.80x = 42,746.10 × 16,828.88
  4. Step 4: Simplify right side
    30,975.80x = 719,368,987.37
  5. Step 5: Solve for x
    x = 719,368,987.37/30,975.80
  6. Step 6: Final answer
    x = 23,223.58

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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.