Home / 15,672.12-21,638.34-12,701.08

Finding the Fourth Proportional to 15,672.12, 21,638.34 and 12,701.08

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Solution

The fourth proportional to 15,672.12, 21,638.34 and 12,701.08 is: 17,536.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,672.12 : 21,638.34 = 12,701.08 : x
  2. Step 2: Convert to fraction form
    15,672.12/21,638.34 = 12,701.08/x
  3. Step 3: Cross multiply
    15,672.12x = 21,638.34 × 12,701.08
  4. Step 4: Simplify right side
    15,672.12x = 274,830,287.41
  5. Step 5: Solve for x
    x = 274,830,287.41/15,672.12
  6. Step 6: Final answer
    x = 17,536.25

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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.