Home / 21,485.39-29,643.19-12,526.55

Finding the Fourth Proportional to 21,485.39, 29,643.19 and 12,526.55

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Solution

The fourth proportional to 21,485.39, 29,643.19 and 12,526.55 is: 17,282.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,485.39 : 29,643.19 = 12,526.55 : x
  2. Step 2: Convert to fraction form
    21,485.39/29,643.19 = 12,526.55/x
  3. Step 3: Cross multiply
    21,485.39x = 29,643.19 × 12,526.55
  4. Step 4: Simplify right side
    21,485.39x = 371,326,901.69
  5. Step 5: Solve for x
    x = 371,326,901.69/21,485.39
  6. Step 6: Final answer
    x = 17,282.76

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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.