Home / 14,268.81-21,392.28-8,721.12

Finding the Fourth Proportional to 14,268.81, 21,392.28 and 8,721.12

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Solution

The fourth proportional to 14,268.81, 21,392.28 and 8,721.12 is: 13,075.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,268.81 : 21,392.28 = 8,721.12 : x
  2. Step 2: Convert to fraction form
    14,268.81/21,392.28 = 8,721.12/x
  3. Step 3: Cross multiply
    14,268.81x = 21,392.28 × 8,721.12
  4. Step 4: Simplify right side
    14,268.81x = 186,564,640.95
  5. Step 5: Solve for x
    x = 186,564,640.95/14,268.81
  6. Step 6: Final answer
    x = 13,075.00

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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.