Home / 30,975.60-42,746.10-16,828.56

Finding the Fourth Proportional to 30,975.60, 42,746.10 and 16,828.56

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Solution

The fourth proportional to 30,975.60, 42,746.10 and 16,828.56 is: 23,223.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,975.60 : 42,746.10 = 16,828.56 : x
  2. Step 2: Convert to fraction form
    30,975.60/42,746.10 = 16,828.56/x
  3. Step 3: Cross multiply
    30,975.60x = 42,746.10 × 16,828.56
  4. Step 4: Simplify right side
    30,975.60x = 719,355,308.62
  5. Step 5: Solve for x
    x = 719,355,308.62/30,975.60
  6. Step 6: Final answer
    x = 23,223.29

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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.