Home / 28,463.88-39,281.48-15,718.86

Finding the Fourth Proportional to 28,463.88, 39,281.48 and 15,718.86

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Solution

The fourth proportional to 28,463.88, 39,281.48 and 15,718.86 is: 21,692.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,463.88 : 39,281.48 = 15,718.86 : x
  2. Step 2: Convert to fraction form
    28,463.88/39,281.48 = 15,718.86/x
  3. Step 3: Cross multiply
    28,463.88x = 39,281.48 × 15,718.86
  4. Step 4: Simplify right side
    28,463.88x = 617,460,084.71
  5. Step 5: Solve for x
    x = 617,460,084.71/28,463.88
  6. Step 6: Final answer
    x = 21,692.76

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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.