Home / 21,509.78-32,270.81-6,718.91

Finding the Fourth Proportional to 21,509.78, 32,270.81 and 6,718.91

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Solution

The fourth proportional to 21,509.78, 32,270.81 and 6,718.91 is: 10,080.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,509.78 : 32,270.81 = 6,718.91 : x
  2. Step 2: Convert to fraction form
    21,509.78/32,270.81 = 6,718.91/x
  3. Step 3: Cross multiply
    21,509.78x = 32,270.81 × 6,718.91
  4. Step 4: Simplify right side
    21,509.78x = 216,824,473.07
  5. Step 5: Solve for x
    x = 216,824,473.07/21,509.78
  6. Step 6: Final answer
    x = 10,080.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.