Home / 21,537.59-29,709.45-13,457.21

Finding the Fourth Proportional to 21,537.59, 29,709.45 and 13,457.21

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Solution

The fourth proportional to 21,537.59, 29,709.45 and 13,457.21 is: 18,563.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,537.59 : 29,709.45 = 13,457.21 : x
  2. Step 2: Convert to fraction form
    21,537.59/29,709.45 = 13,457.21/x
  3. Step 3: Cross multiply
    21,537.59x = 29,709.45 × 13,457.21
  4. Step 4: Simplify right side
    21,537.59x = 399,806,159.09
  5. Step 5: Solve for x
    x = 399,806,159.09/21,537.59
  6. Step 6: Final answer
    x = 18,563.18

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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.