Home / 15,455.25-21,312.72-13,748.45

Finding the Fourth Proportional to 15,455.25, 21,312.72 and 13,748.45

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Solution

The fourth proportional to 15,455.25, 21,312.72 and 13,748.45 is: 18,959.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,455.25 : 21,312.72 = 13,748.45 : x
  2. Step 2: Convert to fraction form
    15,455.25/21,312.72 = 13,748.45/x
  3. Step 3: Cross multiply
    15,455.25x = 21,312.72 × 13,748.45
  4. Step 4: Simplify right side
    15,455.25x = 293,016,758.72
  5. Step 5: Solve for x
    x = 293,016,758.72/15,455.25
  6. Step 6: Final answer
    x = 18,959.04

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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.