Home / 15,216.90-21,091.35-14,340.89

Finding the Fourth Proportional to 15,216.90, 21,091.35 and 14,340.89

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Solution

The fourth proportional to 15,216.90, 21,091.35 and 14,340.89 is: 19,877.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216.90 : 21,091.35 = 14,340.89 : x
  2. Step 2: Convert to fraction form
    15,216.90/21,091.35 = 14,340.89/x
  3. Step 3: Cross multiply
    15,216.90x = 21,091.35 × 14,340.89
  4. Step 4: Simplify right side
    15,216.90x = 302,468,730.30
  5. Step 5: Solve for x
    x = 302,468,730.30/15,216.90
  6. Step 6: Final answer
    x = 19,877.16

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.