Home / 21,091.89-29,130.35-16,368.99

Finding the Fourth Proportional to 21,091.89, 29,130.35 and 16,368.99

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Solution

The fourth proportional to 21,091.89, 29,130.35 and 16,368.99 is: 22,607.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,091.89 : 29,130.35 = 16,368.99 : x
  2. Step 2: Convert to fraction form
    21,091.89/29,130.35 = 16,368.99/x
  3. Step 3: Cross multiply
    21,091.89x = 29,130.35 × 16,368.99
  4. Step 4: Simplify right side
    21,091.89x = 476,834,326.00
  5. Step 5: Solve for x
    x = 476,834,326.00/21,091.89
  6. Step 6: Final answer
    x = 22,607.47

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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.