Home / 15,699.70-21,643.93-12,523.76

Finding the Fourth Proportional to 15,699.70, 21,643.93 and 12,523.76

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Solution

The fourth proportional to 15,699.70, 21,643.93 and 12,523.76 is: 17,265.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,699.70 : 21,643.93 = 12,523.76 : x
  2. Step 2: Convert to fraction form
    15,699.70/21,643.93 = 12,523.76/x
  3. Step 3: Cross multiply
    15,699.70x = 21,643.93 × 12,523.76
  4. Step 4: Simplify right side
    15,699.70x = 271,063,407.58
  5. Step 5: Solve for x
    x = 271,063,407.58/15,699.70
  6. Step 6: Final answer
    x = 17,265.52

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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.