Home / 21,363.45-29,484.30-12,869.99

Finding the Fourth Proportional to 21,363.45, 29,484.30 and 12,869.99

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Solution

The fourth proportional to 21,363.45, 29,484.30 and 12,869.99 is: 17,762.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,363.45 : 29,484.30 = 12,869.99 : x
  2. Step 2: Convert to fraction form
    21,363.45/29,484.30 = 12,869.99/x
  3. Step 3: Cross multiply
    21,363.45x = 29,484.30 × 12,869.99
  4. Step 4: Simplify right side
    21,363.45x = 379,462,657.56
  5. Step 5: Solve for x
    x = 379,462,657.56/21,363.45
  6. Step 6: Final answer
    x = 17,762.24

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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.