Home / 21,457.84-29,606.26-12,953.24

Finding the Fourth Proportional to 21,457.84, 29,606.26 and 12,953.24

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Solution

The fourth proportional to 21,457.84, 29,606.26 and 12,953.24 is: 17,872.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,457.84 : 29,606.26 = 12,953.24 : x
  2. Step 2: Convert to fraction form
    21,457.84/29,606.26 = 12,953.24/x
  3. Step 3: Cross multiply
    21,457.84x = 29,606.26 × 12,953.24
  4. Step 4: Simplify right side
    21,457.84x = 383,496,991.28
  5. Step 5: Solve for x
    x = 383,496,991.28/21,457.84
  6. Step 6: Final answer
    x = 17,872.12

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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.