Home / 21,077.08-29,090.45-13,532.95

Finding the Fourth Proportional to 21,077.08, 29,090.45 and 13,532.95

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Solution

The fourth proportional to 21,077.08, 29,090.45 and 13,532.95 is: 18,678.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.08 : 29,090.45 = 13,532.95 : x
  2. Step 2: Convert to fraction form
    21,077.08/29,090.45 = 13,532.95/x
  3. Step 3: Cross multiply
    21,077.08x = 29,090.45 × 13,532.95
  4. Step 4: Simplify right side
    21,077.08x = 393,679,605.33
  5. Step 5: Solve for x
    x = 393,679,605.33/21,077.08
  6. Step 6: Final answer
    x = 18,678.09

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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.