Home / 21,886.52-30,203.40-12,455.07

Finding the Fourth Proportional to 21,886.52, 30,203.40 and 12,455.07

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Solution

The fourth proportional to 21,886.52, 30,203.40 and 12,455.07 is: 17,188.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,886.52 : 30,203.40 = 12,455.07 : x
  2. Step 2: Convert to fraction form
    21,886.52/30,203.40 = 12,455.07/x
  3. Step 3: Cross multiply
    21,886.52x = 30,203.40 × 12,455.07
  4. Step 4: Simplify right side
    21,886.52x = 376,185,461.24
  5. Step 5: Solve for x
    x = 376,185,461.24/21,886.52
  6. Step 6: Final answer
    x = 17,188.00

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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.