Home / 30,810.75-42,518.85-16,663.59

Finding the Fourth Proportional to 30,810.75, 42,518.85 and 16,663.59

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Solution

The fourth proportional to 30,810.75, 42,518.85 and 16,663.59 is: 22,995.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,810.75 : 42,518.85 = 16,663.59 : x
  2. Step 2: Convert to fraction form
    30,810.75/42,518.85 = 16,663.59/x
  3. Step 3: Cross multiply
    30,810.75x = 42,518.85 × 16,663.59
  4. Step 4: Simplify right side
    30,810.75x = 708,516,683.67
  5. Step 5: Solve for x
    x = 708,516,683.67/30,810.75
  6. Step 6: Final answer
    x = 22,995.76

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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.