Home / 15,216.18-21,012.70-14,387.86

Finding the Fourth Proportional to 15,216.18, 21,012.70 and 14,387.86

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Solution

The fourth proportional to 15,216.18, 21,012.70 and 14,387.86 is: 19,868.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,216.18 : 21,012.70 = 14,387.86 : x
  2. Step 2: Convert to fraction form
    15,216.18/21,012.70 = 14,387.86/x
  3. Step 3: Cross multiply
    15,216.18x = 21,012.70 × 14,387.86
  4. Step 4: Simplify right side
    15,216.18x = 302,327,680.76
  5. Step 5: Solve for x
    x = 302,327,680.76/15,216.18
  6. Step 6: Final answer
    x = 19,868.83

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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.