Home / 21,320.19-31,986.96-8,846.10

Finding the Fourth Proportional to 21,320.19, 31,986.96 and 8,846.10

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Solution

The fourth proportional to 21,320.19, 31,986.96 and 8,846.10 is: 13,271.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,320.19 : 31,986.96 = 8,846.10 : x
  2. Step 2: Convert to fraction form
    21,320.19/31,986.96 = 8,846.10/x
  3. Step 3: Cross multiply
    21,320.19x = 31,986.96 × 8,846.10
  4. Step 4: Simplify right side
    21,320.19x = 282,959,846.86
  5. Step 5: Solve for x
    x = 282,959,846.86/21,320.19
  6. Step 6: Final answer
    x = 13,271.92

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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.