Home / 30,840.14-42,559.68-16,693.28

Finding the Fourth Proportional to 30,840.14, 42,559.68 and 16,693.28

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Solution

The fourth proportional to 30,840.14, 42,559.68 and 16,693.28 is: 23,036.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,840.14 : 42,559.68 = 16,693.28 : x
  2. Step 2: Convert to fraction form
    30,840.14/42,559.68 = 16,693.28/x
  3. Step 3: Cross multiply
    30,840.14x = 42,559.68 × 16,693.28
  4. Step 4: Simplify right side
    30,840.14x = 710,460,654.95
  5. Step 5: Solve for x
    x = 710,460,654.95/30,840.14
  6. Step 6: Final answer
    x = 23,036.88

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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.