Home / 15,495.25-21,439.74-13,509.94

Finding the Fourth Proportional to 15,495.25, 21,439.74 and 13,509.94

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Solution

The fourth proportional to 15,495.25, 21,439.74 and 13,509.94 is: 18,692.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,495.25 : 21,439.74 = 13,509.94 : x
  2. Step 2: Convert to fraction form
    15,495.25/21,439.74 = 13,509.94/x
  3. Step 3: Cross multiply
    15,495.25x = 21,439.74 × 13,509.94
  4. Step 4: Simplify right side
    15,495.25x = 289,649,601.02
  5. Step 5: Solve for x
    x = 289,649,601.02/15,495.25
  6. Step 6: Final answer
    x = 18,692.80

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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.