Home / 14,276.90-21,415.35-12,818.90

Finding the Fourth Proportional to 14,276.90, 21,415.35 and 12,818.90

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Solution

The fourth proportional to 14,276.90, 21,415.35 and 12,818.90 is: 19,228.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,276.90 : 21,415.35 = 12,818.90 : x
  2. Step 2: Convert to fraction form
    14,276.90/21,415.35 = 12,818.90/x
  3. Step 3: Cross multiply
    14,276.90x = 21,415.35 × 12,818.90
  4. Step 4: Simplify right side
    14,276.90x = 274,521,230.12
  5. Step 5: Solve for x
    x = 274,521,230.12/14,276.90
  6. Step 6: Final answer
    x = 19,228.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.