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Finding the Fourth Proportional to 21,507.08, 29,692.10 and 14,335.08

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Solution

The fourth proportional to 21,507.08, 29,692.10 and 14,335.08 is: 19,790.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,507.08 : 29,692.10 = 14,335.08 : x
  2. Step 2: Convert to fraction form
    21,507.08/29,692.10 = 14,335.08/x
  3. Step 3: Cross multiply
    21,507.08x = 29,692.10 × 14,335.08
  4. Step 4: Simplify right side
    21,507.08x = 425,638,628.87
  5. Step 5: Solve for x
    x = 425,638,628.87/21,507.08
  6. Step 6: Final answer
    x = 19,790.63

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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.