Home / 28,146.99-42,208.81-10,378.66

Finding the Fourth Proportional to 28,146.99, 42,208.81 and 10,378.66

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Solution

The fourth proportional to 28,146.99, 42,208.81 and 10,378.66 is: 15,563.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,146.99 : 42,208.81 = 10,378.66 : x
  2. Step 2: Convert to fraction form
    28,146.99/42,208.81 = 10,378.66/x
  3. Step 3: Cross multiply
    28,146.99x = 42,208.81 × 10,378.66
  4. Step 4: Simplify right side
    28,146.99x = 438,070,887.99
  5. Step 5: Solve for x
    x = 438,070,887.99/28,146.99
  6. Step 6: Final answer
    x = 15,563.69

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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.