Home / 21,503.09-29,669.45-12,071.05

Finding the Fourth Proportional to 21,503.09, 29,669.45 and 12,071.05

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Solution

The fourth proportional to 21,503.09, 29,669.45 and 12,071.05 is: 16,655.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,503.09 : 29,669.45 = 12,071.05 : x
  2. Step 2: Convert to fraction form
    21,503.09/29,669.45 = 12,071.05/x
  3. Step 3: Cross multiply
    21,503.09x = 29,669.45 × 12,071.05
  4. Step 4: Simplify right side
    21,503.09x = 358,141,279.89
  5. Step 5: Solve for x
    x = 358,141,279.89/21,503.09
  6. Step 6: Final answer
    x = 16,655.34

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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.