Home / 21,088.80-31,632.58-5,506.42

Finding the Fourth Proportional to 21,088.80, 31,632.58 and 5,506.42

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Solution

The fourth proportional to 21,088.80, 31,632.58 and 5,506.42 is: 8,259.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,088.80 : 31,632.58 = 5,506.42 : x
  2. Step 2: Convert to fraction form
    21,088.80/31,632.58 = 5,506.42/x
  3. Step 3: Cross multiply
    21,088.80x = 31,632.58 × 5,506.42
  4. Step 4: Simplify right side
    21,088.80x = 174,182,271.16
  5. Step 5: Solve for x
    x = 174,182,271.16/21,088.80
  6. Step 6: Final answer
    x = 8,259.47

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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.