Home / 21,167.72-29,156.58-14,783.08

Finding the Fourth Proportional to 21,167.72, 29,156.58 and 14,783.08

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Solution

The fourth proportional to 21,167.72, 29,156.58 and 14,783.08 is: 20,362.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,167.72 : 29,156.58 = 14,783.08 : x
  2. Step 2: Convert to fraction form
    21,167.72/29,156.58 = 14,783.08/x
  3. Step 3: Cross multiply
    21,167.72x = 29,156.58 × 14,783.08
  4. Step 4: Simplify right side
    21,167.72x = 431,024,054.67
  5. Step 5: Solve for x
    x = 431,024,054.67/21,167.72
  6. Step 6: Final answer
    x = 20,362.33

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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.