Home / 19,657.90-27,128.04-10,705.39

Finding the Fourth Proportional to 19,657.90, 27,128.04 and 10,705.39

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Solution

The fourth proportional to 19,657.90, 27,128.04 and 10,705.39 is: 14,773.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.90 : 27,128.04 = 10,705.39 : x
  2. Step 2: Convert to fraction form
    19,657.90/27,128.04 = 10,705.39/x
  3. Step 3: Cross multiply
    19,657.90x = 27,128.04 × 10,705.39
  4. Step 4: Simplify right side
    19,657.90x = 290,416,248.14
  5. Step 5: Solve for x
    x = 290,416,248.14/19,657.90
  6. Step 6: Final answer
    x = 14,773.51

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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.