Home / 21,271.36-31,925.48-21,222.16

Finding the Fourth Proportional to 21,271.36, 31,925.48 and 21,222.16

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Solution

The fourth proportional to 21,271.36, 31,925.48 and 21,222.16 is: 31,851.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,271.36 : 31,925.48 = 21,222.16 : x
  2. Step 2: Convert to fraction form
    21,271.36/31,925.48 = 21,222.16/x
  3. Step 3: Cross multiply
    21,271.36x = 31,925.48 × 21,222.16
  4. Step 4: Simplify right side
    21,271.36x = 677,527,644.64
  5. Step 5: Solve for x
    x = 677,527,644.64/21,271.36
  6. Step 6: Final answer
    x = 31,851.64

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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.