Home / 19,897.30-27,457-11,399.46

Finding the Fourth Proportional to 19,897.30, 27,457 and 11,399.46

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Solution

The fourth proportional to 19,897.30, 27,457 and 11,399.46 is: 15,730.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,897.30 : 27,457 = 11,399.46 : x
  2. Step 2: Convert to fraction form
    19,897.30/27,457 = 11,399.46/x
  3. Step 3: Cross multiply
    19,897.30x = 27,457 × 11,399.46
  4. Step 4: Simplify right side
    19,897.30x = 312,994,973.22
  5. Step 5: Solve for x
    x = 312,994,973.22/19,897.30
  6. Step 6: Final answer
    x = 15,730.52

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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.