Home / 21,865.10-32,813.57-8,721.23

Finding the Fourth Proportional to 21,865.10, 32,813.57 and 8,721.23

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Solution

The fourth proportional to 21,865.10, 32,813.57 and 8,721.23 is: 13,088.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,865.10 : 32,813.57 = 8,721.23 : x
  2. Step 2: Convert to fraction form
    21,865.10/32,813.57 = 8,721.23/x
  3. Step 3: Cross multiply
    21,865.10x = 32,813.57 × 8,721.23
  4. Step 4: Simplify right side
    21,865.10x = 286,174,548.83
  5. Step 5: Solve for x
    x = 286,174,548.83/21,865.10
  6. Step 6: Final answer
    x = 13,088.19

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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.