Home / 30,911.02-42,641.94-20,826.52

Finding the Fourth Proportional to 30,911.02, 42,641.94 and 20,826.52

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Solution

The fourth proportional to 30,911.02, 42,641.94 and 20,826.52 is: 28,730.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,911.02 : 42,641.94 = 20,826.52 : x
  2. Step 2: Convert to fraction form
    30,911.02/42,641.94 = 20,826.52/x
  3. Step 3: Cross multiply
    30,911.02x = 42,641.94 × 20,826.52
  4. Step 4: Simplify right side
    30,911.02x = 888,083,187.74
  5. Step 5: Solve for x
    x = 888,083,187.74/30,911.02
  6. Step 6: Final answer
    x = 28,730.31

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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.