Home / 28,280.34-39,036.02-20,345.63

Finding the Fourth Proportional to 28,280.34, 39,036.02 and 20,345.63

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Solution

The fourth proportional to 28,280.34, 39,036.02 and 20,345.63 is: 28,083.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,280.34 : 39,036.02 = 20,345.63 : x
  2. Step 2: Convert to fraction form
    28,280.34/39,036.02 = 20,345.63/x
  3. Step 3: Cross multiply
    28,280.34x = 39,036.02 × 20,345.63
  4. Step 4: Simplify right side
    28,280.34x = 794,212,122.68
  5. Step 5: Solve for x
    x = 794,212,122.68/28,280.34
  6. Step 6: Final answer
    x = 28,083.54

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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.