Home / 13,989.16-19,302.80-8,019.76

Finding the Fourth Proportional to 13,989.16, 19,302.80 and 8,019.76

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Solution

The fourth proportional to 13,989.16, 19,302.80 and 8,019.76 is: 11,065.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,989.16 : 19,302.80 = 8,019.76 : x
  2. Step 2: Convert to fraction form
    13,989.16/19,302.80 = 8,019.76/x
  3. Step 3: Cross multiply
    13,989.16x = 19,302.80 × 8,019.76
  4. Step 4: Simplify right side
    13,989.16x = 154,803,823.33
  5. Step 5: Solve for x
    x = 154,803,823.33/13,989.16
  6. Step 6: Final answer
    x = 11,065.98

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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.