Home / 28,140.36-42,210.60-19,348.68

Finding the Fourth Proportional to 28,140.36, 42,210.60 and 19,348.68

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Solution

The fourth proportional to 28,140.36, 42,210.60 and 19,348.68 is: 29,023.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.36 : 42,210.60 = 19,348.68 : x
  2. Step 2: Convert to fraction form
    28,140.36/42,210.60 = 19,348.68/x
  3. Step 3: Cross multiply
    28,140.36x = 42,210.60 × 19,348.68
  4. Step 4: Simplify right side
    28,140.36x = 816,719,392.01
  5. Step 5: Solve for x
    x = 816,719,392.01/28,140.36
  6. Step 6: Final answer
    x = 29,023.06

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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.