Home / 13,988.90-19,302.40-8,018.39

Finding the Fourth Proportional to 13,988.90, 19,302.40 and 8,018.39

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Solution

The fourth proportional to 13,988.90, 19,302.40 and 8,018.39 is: 11,064.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,988.90 : 19,302.40 = 8,018.39 : x
  2. Step 2: Convert to fraction form
    13,988.90/19,302.40 = 8,018.39/x
  3. Step 3: Cross multiply
    13,988.90x = 19,302.40 × 8,018.39
  4. Step 4: Simplify right side
    13,988.90x = 154,774,229.41
  5. Step 5: Solve for x
    x = 154,774,229.41/13,988.90
  6. Step 6: Final answer
    x = 11,064.07

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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.