Home / 13,213.31-19,827.13-7,670.63

Finding the Fourth Proportional to 13,213.31, 19,827.13 and 7,670.63

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Solution

The fourth proportional to 13,213.31, 19,827.13 and 7,670.63 is: 11,510.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,213.31 : 19,827.13 = 7,670.63 : x
  2. Step 2: Convert to fraction form
    13,213.31/19,827.13 = 7,670.63/x
  3. Step 3: Cross multiply
    13,213.31x = 19,827.13 × 7,670.63
  4. Step 4: Simplify right side
    13,213.31x = 152,086,479.06
  5. Step 5: Solve for x
    x = 152,086,479.06/13,213.31
  6. Step 6: Final answer
    x = 11,510.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.