Home / 15,477.53-21,310.43-13,658.67

Finding the Fourth Proportional to 15,477.53, 21,310.43 and 13,658.67

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Solution

The fourth proportional to 15,477.53, 21,310.43 and 13,658.67 is: 18,806.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,477.53 : 21,310.43 = 13,658.67 : x
  2. Step 2: Convert to fraction form
    15,477.53/21,310.43 = 13,658.67/x
  3. Step 3: Cross multiply
    15,477.53x = 21,310.43 × 13,658.67
  4. Step 4: Simplify right side
    15,477.53x = 291,072,062.63
  5. Step 5: Solve for x
    x = 291,072,062.63/15,477.53
  6. Step 6: Final answer
    x = 18,806.11

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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.