Home / 15,643.84-21,616.48-12,525.76

Finding the Fourth Proportional to 15,643.84, 21,616.48 and 12,525.76

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Solution

The fourth proportional to 15,643.84, 21,616.48 and 12,525.76 is: 17,307.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,643.84 : 21,616.48 = 12,525.76 : x
  2. Step 2: Convert to fraction form
    15,643.84/21,616.48 = 12,525.76/x
  3. Step 3: Cross multiply
    15,643.84x = 21,616.48 × 12,525.76
  4. Step 4: Simplify right side
    15,643.84x = 270,762,840.52
  5. Step 5: Solve for x
    x = 270,762,840.52/15,643.84
  6. Step 6: Final answer
    x = 17,307.95

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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.