Home / 21,210.95-29,272.01-11,779.50

Finding the Fourth Proportional to 21,210.95, 29,272.01 and 11,779.50

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Solution

The fourth proportional to 21,210.95, 29,272.01 and 11,779.50 is: 16,256.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,210.95 : 29,272.01 = 11,779.50 : x
  2. Step 2: Convert to fraction form
    21,210.95/29,272.01 = 11,779.50/x
  3. Step 3: Cross multiply
    21,210.95x = 29,272.01 × 11,779.50
  4. Step 4: Simplify right side
    21,210.95x = 344,809,641.80
  5. Step 5: Solve for x
    x = 344,809,641.80/21,210.95
  6. Step 6: Final answer
    x = 16,256.21

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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.