Home / 21,077.19-29,100.08-13,526.78

Finding the Fourth Proportional to 21,077.19, 29,100.08 and 13,526.78

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Solution

The fourth proportional to 21,077.19, 29,100.08 and 13,526.78 is: 18,675.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,077.19 : 29,100.08 = 13,526.78 : x
  2. Step 2: Convert to fraction form
    21,077.19/29,100.08 = 13,526.78/x
  3. Step 3: Cross multiply
    21,077.19x = 29,100.08 × 13,526.78
  4. Step 4: Simplify right side
    21,077.19x = 393,630,167.01
  5. Step 5: Solve for x
    x = 393,630,167.01/21,077.19
  6. Step 6: Final answer
    x = 18,675.65

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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.