Home / 28,465.56-39,283.99-15,718.69

Finding the Fourth Proportional to 28,465.56, 39,283.99 and 15,718.69

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Solution

The fourth proportional to 28,465.56, 39,283.99 and 15,718.69 is: 21,692.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,465.56 : 39,283.99 = 15,718.69 : x
  2. Step 2: Convert to fraction form
    28,465.56/39,283.99 = 15,718.69/x
  3. Step 3: Cross multiply
    28,465.56x = 39,283.99 × 15,718.69
  4. Step 4: Simplify right side
    28,465.56x = 617,492,860.77
  5. Step 5: Solve for x
    x = 617,492,860.77/28,465.56
  6. Step 6: Final answer
    x = 21,692.63

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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.