Home / 21,772.01-30,045.38-12,340.64

Finding the Fourth Proportional to 21,772.01, 30,045.38 and 12,340.64

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Solution

The fourth proportional to 21,772.01, 30,045.38 and 12,340.64 is: 17,030.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,772.01 : 30,045.38 = 12,340.64 : x
  2. Step 2: Convert to fraction form
    21,772.01/30,045.38 = 12,340.64/x
  3. Step 3: Cross multiply
    21,772.01x = 30,045.38 × 12,340.64
  4. Step 4: Simplify right side
    21,772.01x = 370,779,006.31
  5. Step 5: Solve for x
    x = 370,779,006.31/21,772.01
  6. Step 6: Final answer
    x = 17,030.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.