Home / 21,670.20-29,883.74-14,487.93

Finding the Fourth Proportional to 21,670.20, 29,883.74 and 14,487.93

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Solution

The fourth proportional to 21,670.20, 29,883.74 and 14,487.93 is: 19,979.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,670.20 : 29,883.74 = 14,487.93 : x
  2. Step 2: Convert to fraction form
    21,670.20/29,883.74 = 14,487.93/x
  3. Step 3: Cross multiply
    21,670.20x = 29,883.74 × 14,487.93
  4. Step 4: Simplify right side
    21,670.20x = 432,953,460.82
  5. Step 5: Solve for x
    x = 432,953,460.82/21,670.20
  6. Step 6: Final answer
    x = 19,979.21

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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.