Home / 21,076.81-29,099.55-13,526.39

Finding the Fourth Proportional to 21,076.81, 29,099.55 and 13,526.39

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Solution

The fourth proportional to 21,076.81, 29,099.55 and 13,526.39 is: 18,675.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,076.81 : 29,099.55 = 13,526.39 : x
  2. Step 2: Convert to fraction form
    21,076.81/29,099.55 = 13,526.39/x
  3. Step 3: Cross multiply
    21,076.81x = 29,099.55 × 13,526.39
  4. Step 4: Simplify right side
    21,076.81x = 393,611,985.60
  5. Step 5: Solve for x
    x = 393,611,985.60/21,076.81
  6. Step 6: Final answer
    x = 18,675.12

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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.