Home / 21,559.40-29,751.63-12,127.95

Finding the Fourth Proportional to 21,559.40, 29,751.63 and 12,127.95

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Solution

The fourth proportional to 21,559.40, 29,751.63 and 12,127.95 is: 16,736.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,559.40 : 29,751.63 = 12,127.95 : x
  2. Step 2: Convert to fraction form
    21,559.40/29,751.63 = 12,127.95/x
  3. Step 3: Cross multiply
    21,559.40x = 29,751.63 × 12,127.95
  4. Step 4: Simplify right side
    21,559.40x = 360,826,281.06
  5. Step 5: Solve for x
    x = 360,826,281.06/21,559.40
  6. Step 6: Final answer
    x = 16,736.38

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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.