Home / 15,507.63-21,390.93-13,522.95

Finding the Fourth Proportional to 15,507.63, 21,390.93 and 13,522.95

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Solution

The fourth proportional to 15,507.63, 21,390.93 and 13,522.95 is: 18,653.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,507.63 : 21,390.93 = 13,522.95 : x
  2. Step 2: Convert to fraction form
    15,507.63/21,390.93 = 13,522.95/x
  3. Step 3: Cross multiply
    15,507.63x = 21,390.93 × 13,522.95
  4. Step 4: Simplify right side
    15,507.63x = 289,268,476.84
  5. Step 5: Solve for x
    x = 289,268,476.84/15,507.63
  6. Step 6: Final answer
    x = 18,653.30

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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.