Home / 30,840.90-42,560.40-16,693.71

Finding the Fourth Proportional to 30,840.90, 42,560.40 and 16,693.71

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Solution

The fourth proportional to 30,840.90, 42,560.40 and 16,693.71 is: 23,037.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,840.90 : 42,560.40 = 16,693.71 : x
  2. Step 2: Convert to fraction form
    30,840.90/42,560.40 = 16,693.71/x
  3. Step 3: Cross multiply
    30,840.90x = 42,560.40 × 16,693.71
  4. Step 4: Simplify right side
    30,840.90x = 710,490,975.08
  5. Step 5: Solve for x
    x = 710,490,975.08/30,840.90
  6. Step 6: Final answer
    x = 23,037.30

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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.