Home / 28,570.16-42,830.60-13,789.46

Finding the Fourth Proportional to 28,570.16, 42,830.60 and 13,789.46

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Solution

The fourth proportional to 28,570.16, 42,830.60 and 13,789.46 is: 20,672.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,570.16 : 42,830.60 = 13,789.46 : x
  2. Step 2: Convert to fraction form
    28,570.16/42,830.60 = 13,789.46/x
  3. Step 3: Cross multiply
    28,570.16x = 42,830.60 × 13,789.46
  4. Step 4: Simplify right side
    28,570.16x = 590,610,562.38
  5. Step 5: Solve for x
    x = 590,610,562.38/28,570.16
  6. Step 6: Final answer
    x = 20,672.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.