Home / 21,325.80-29,402.12-14,599.84

Finding the Fourth Proportional to 21,325.80, 29,402.12 and 14,599.84

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Solution

The fourth proportional to 21,325.80, 29,402.12 and 14,599.84 is: 20,128.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,325.80 : 29,402.12 = 14,599.84 : x
  2. Step 2: Convert to fraction form
    21,325.80/29,402.12 = 14,599.84/x
  3. Step 3: Cross multiply
    21,325.80x = 29,402.12 × 14,599.84
  4. Step 4: Simplify right side
    21,325.80x = 429,266,247.66
  5. Step 5: Solve for x
    x = 429,266,247.66/21,325.80
  6. Step 6: Final answer
    x = 20,128.96

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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.