Home / 19,657.70-27,128.11-10,705.69

Finding the Fourth Proportional to 19,657.70, 27,128.11 and 10,705.69

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Solution

The fourth proportional to 19,657.70, 27,128.11 and 10,705.69 is: 14,774.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,657.70 : 27,128.11 = 10,705.69 : x
  2. Step 2: Convert to fraction form
    19,657.70/27,128.11 = 10,705.69/x
  3. Step 3: Cross multiply
    19,657.70x = 27,128.11 × 10,705.69
  4. Step 4: Simplify right side
    19,657.70x = 290,424,980.46
  5. Step 5: Solve for x
    x = 290,424,980.46/19,657.70
  6. Step 6: Final answer
    x = 14,774.11

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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.