Home / 19,656.63-27,152.69-15,705.45

Finding the Fourth Proportional to 19,656.63, 27,152.69 and 15,705.45

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Solution

The fourth proportional to 19,656.63, 27,152.69 and 15,705.45 is: 21,694.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,656.63 : 27,152.69 = 15,705.45 : x
  2. Step 2: Convert to fraction form
    19,656.63/27,152.69 = 15,705.45/x
  3. Step 3: Cross multiply
    19,656.63x = 27,152.69 × 15,705.45
  4. Step 4: Simplify right side
    19,656.63x = 426,445,215.16
  5. Step 5: Solve for x
    x = 426,445,215.16/19,656.63
  6. Step 6: Final answer
    x = 21,694.73

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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.