Home / 28,417.32-42,625.98-9,945

Finding the Fourth Proportional to 28,417.32, 42,625.98 and 9,945

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Solution

The fourth proportional to 28,417.32, 42,625.98 and 9,945 is: 14,917.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,417.32 : 42,625.98 = 9,945 : x
  2. Step 2: Convert to fraction form
    28,417.32/42,625.98 = 9,945/x
  3. Step 3: Cross multiply
    28,417.32x = 42,625.98 × 9,945
  4. Step 4: Simplify right side
    28,417.32x = 423,915,371.10
  5. Step 5: Solve for x
    x = 423,915,371.10/28,417.32
  6. Step 6: Final answer
    x = 14,917.50

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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.