Home / 30,840.78-42,560.30-16,693.58

Finding the Fourth Proportional to 30,840.78, 42,560.30 and 16,693.58

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Solution

The fourth proportional to 30,840.78, 42,560.30 and 16,693.58 is: 23,037.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,840.78 : 42,560.30 = 16,693.58 : x
  2. Step 2: Convert to fraction form
    30,840.78/42,560.30 = 16,693.58/x
  3. Step 3: Cross multiply
    30,840.78x = 42,560.30 × 16,693.58
  4. Step 4: Simplify right side
    30,840.78x = 710,483,772.87
  5. Step 5: Solve for x
    x = 710,483,772.87/30,840.78
  6. Step 6: Final answer
    x = 23,037.15

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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.