Home / 13,888.08-19,165.07-7,921.67

Finding the Fourth Proportional to 13,888.08, 19,165.07 and 7,921.67

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Solution

The fourth proportional to 13,888.08, 19,165.07 and 7,921.67 is: 10,931.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,888.08 : 19,165.07 = 7,921.67 : x
  2. Step 2: Convert to fraction form
    13,888.08/19,165.07 = 7,921.67/x
  3. Step 3: Cross multiply
    13,888.08x = 19,165.07 × 7,921.67
  4. Step 4: Simplify right side
    13,888.08x = 151,819,360.07
  5. Step 5: Solve for x
    x = 151,819,360.07/13,888.08
  6. Step 6: Final answer
    x = 10,931.63

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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.