Home / 28,037.40-38,692.08-15,290.66

Finding the Fourth Proportional to 28,037.40, 38,692.08 and 15,290.66

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Solution

The fourth proportional to 28,037.40, 38,692.08 and 15,290.66 is: 21,101.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,037.40 : 38,692.08 = 15,290.66 : x
  2. Step 2: Convert to fraction form
    28,037.40/38,692.08 = 15,290.66/x
  3. Step 3: Cross multiply
    28,037.40x = 38,692.08 × 15,290.66
  4. Step 4: Simplify right side
    28,037.40x = 591,627,246.51
  5. Step 5: Solve for x
    x = 591,627,246.51/28,037.40
  6. Step 6: Final answer
    x = 21,101.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.