Home / 30,957.34-42,720.45-16,810.18

Finding the Fourth Proportional to 30,957.34, 42,720.45 and 16,810.18

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Solution

The fourth proportional to 30,957.34, 42,720.45 and 16,810.18 is: 23,197.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,957.34 : 42,720.45 = 16,810.18 : x
  2. Step 2: Convert to fraction form
    30,957.34/42,720.45 = 16,810.18/x
  3. Step 3: Cross multiply
    30,957.34x = 42,720.45 × 16,810.18
  4. Step 4: Simplify right side
    30,957.34x = 718,138,454.18
  5. Step 5: Solve for x
    x = 718,138,454.18/30,957.34
  6. Step 6: Final answer
    x = 23,197.68

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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.