Home / 21,064.46-28,908.50-19,070.64

Finding the Fourth Proportional to 21,064.46, 28,908.50 and 19,070.64

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Solution

The fourth proportional to 21,064.46, 28,908.50 and 19,070.64 is: 26,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,064.46 : 28,908.50 = 19,070.64 : x
  2. Step 2: Convert to fraction form
    21,064.46/28,908.50 = 19,070.64/x
  3. Step 3: Cross multiply
    21,064.46x = 28,908.50 × 19,070.64
  4. Step 4: Simplify right side
    21,064.46x = 551,303,501.09
  5. Step 5: Solve for x
    x = 551,303,501.09/21,064.46
  6. Step 6: Final answer
    x = 26,172.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.