Home / 21,045.99-29,054.40-15,374.37

Finding the Fourth Proportional to 21,045.99, 29,054.40 and 15,374.37

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Solution

The fourth proportional to 21,045.99, 29,054.40 and 15,374.37 is: 21,224.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.99 : 29,054.40 = 15,374.37 : x
  2. Step 2: Convert to fraction form
    21,045.99/29,054.40 = 15,374.37/x
  3. Step 3: Cross multiply
    21,045.99x = 29,054.40 × 15,374.37
  4. Step 4: Simplify right side
    21,045.99x = 446,693,095.73
  5. Step 5: Solve for x
    x = 446,693,095.73/21,045.99
  6. Step 6: Final answer
    x = 21,224.62

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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.