Home / 15,445.63-21,299.05-13,214.89

Finding the Fourth Proportional to 15,445.63, 21,299.05 and 13,214.89

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Solution

The fourth proportional to 15,445.63, 21,299.05 and 13,214.89 is: 18,222.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,445.63 : 21,299.05 = 13,214.89 : x
  2. Step 2: Convert to fraction form
    15,445.63/21,299.05 = 13,214.89/x
  3. Step 3: Cross multiply
    15,445.63x = 21,299.05 × 13,214.89
  4. Step 4: Simplify right side
    15,445.63x = 281,464,602.85
  5. Step 5: Solve for x
    x = 281,464,602.85/15,445.63
  6. Step 6: Final answer
    x = 18,222.93

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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.