Home / 21,347.53-29,457.35-12,393.28

Finding the Fourth Proportional to 21,347.53, 29,457.35 and 12,393.28

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Solution

The fourth proportional to 21,347.53, 29,457.35 and 12,393.28 is: 17,101.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,347.53 : 29,457.35 = 12,393.28 : x
  2. Step 2: Convert to fraction form
    21,347.53/29,457.35 = 12,393.28/x
  3. Step 3: Cross multiply
    21,347.53x = 29,457.35 × 12,393.28
  4. Step 4: Simplify right side
    21,347.53x = 365,073,186.61
  5. Step 5: Solve for x
    x = 365,073,186.61/21,347.53
  6. Step 6: Final answer
    x = 17,101.43

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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.