Home / 28,070.49-42,105.93-19,278.75

Finding the Fourth Proportional to 28,070.49, 42,105.93 and 19,278.75

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Solution

The fourth proportional to 28,070.49, 42,105.93 and 19,278.75 is: 28,918.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,070.49 : 42,105.93 = 19,278.75 : x
  2. Step 2: Convert to fraction form
    28,070.49/42,105.93 = 19,278.75/x
  3. Step 3: Cross multiply
    28,070.49x = 42,105.93 × 19,278.75
  4. Step 4: Simplify right side
    28,070.49x = 811,749,697.99
  5. Step 5: Solve for x
    x = 811,749,697.99/28,070.49
  6. Step 6: Final answer
    x = 28,918.26

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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.