Home / 28,427.39-42,643.13-8,703.38

Finding the Fourth Proportional to 28,427.39, 42,643.13 and 8,703.38

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Solution

The fourth proportional to 28,427.39, 42,643.13 and 8,703.38 is: 13,055.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,427.39 : 42,643.13 = 8,703.38 : x
  2. Step 2: Convert to fraction form
    28,427.39/42,643.13 = 8,703.38/x
  3. Step 3: Cross multiply
    28,427.39x = 42,643.13 × 8,703.38
  4. Step 4: Simplify right side
    28,427.39x = 371,139,108.05
  5. Step 5: Solve for x
    x = 371,139,108.05/28,427.39
  6. Step 6: Final answer
    x = 13,055.69

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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.