Home / 30,957.48-42,721.50-16,810.44

Finding the Fourth Proportional to 30,957.48, 42,721.50 and 16,810.44

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Solution

The fourth proportional to 30,957.48, 42,721.50 and 16,810.44 is: 23,198.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,957.48 : 42,721.50 = 16,810.44 : x
  2. Step 2: Convert to fraction form
    30,957.48/42,721.50 = 16,810.44/x
  3. Step 3: Cross multiply
    30,957.48x = 42,721.50 × 16,810.44
  4. Step 4: Simplify right side
    30,957.48x = 718,167,212.46
  5. Step 5: Solve for x
    x = 718,167,212.46/30,957.48
  6. Step 6: Final answer
    x = 23,198.50

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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.