Home / 21,256.74-29,322.09-13,285.13

Finding the Fourth Proportional to 21,256.74, 29,322.09 and 13,285.13

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Solution

The fourth proportional to 21,256.74, 29,322.09 and 13,285.13 is: 18,325.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,256.74 : 29,322.09 = 13,285.13 : x
  2. Step 2: Convert to fraction form
    21,256.74/29,322.09 = 13,285.13/x
  3. Step 3: Cross multiply
    21,256.74x = 29,322.09 × 13,285.13
  4. Step 4: Simplify right side
    21,256.74x = 389,547,630.91
  5. Step 5: Solve for x
    x = 389,547,630.91/21,256.74
  6. Step 6: Final answer
    x = 18,325.84

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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.