Home / 30,898.59-42,640.34-16,751.47

Finding the Fourth Proportional to 30,898.59, 42,640.34 and 16,751.47

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Solution

The fourth proportional to 30,898.59, 42,640.34 and 16,751.47 is: 23,117.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,898.59 : 42,640.34 = 16,751.47 : x
  2. Step 2: Convert to fraction form
    30,898.59/42,640.34 = 16,751.47/x
  3. Step 3: Cross multiply
    30,898.59x = 42,640.34 × 16,751.47
  4. Step 4: Simplify right side
    30,898.59x = 714,288,376.30
  5. Step 5: Solve for x
    x = 714,288,376.30/30,898.59
  6. Step 6: Final answer
    x = 23,117.18

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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.