Home / 21,338.16-32,007.80-12,579.36

Finding the Fourth Proportional to 21,338.16, 32,007.80 and 12,579.36

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Solution

The fourth proportional to 21,338.16, 32,007.80 and 12,579.36 is: 18,869.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,338.16 : 32,007.80 = 12,579.36 : x
  2. Step 2: Convert to fraction form
    21,338.16/32,007.80 = 12,579.36/x
  3. Step 3: Cross multiply
    21,338.16x = 32,007.80 × 12,579.36
  4. Step 4: Simplify right side
    21,338.16x = 402,637,639.01
  5. Step 5: Solve for x
    x = 402,637,639.01/21,338.16
  6. Step 6: Final answer
    x = 18,869.37

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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.