Home / 13,931.76-19,225.56-7,881.93

Finding the Fourth Proportional to 13,931.76, 19,225.56 and 7,881.93

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Solution

The fourth proportional to 13,931.76, 19,225.56 and 7,881.93 is: 10,876.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,931.76 : 19,225.56 = 7,881.93 : x
  2. Step 2: Convert to fraction form
    13,931.76/19,225.56 = 7,881.93/x
  3. Step 3: Cross multiply
    13,931.76x = 19,225.56 × 7,881.93
  4. Step 4: Simplify right side
    13,931.76x = 151,534,518.13
  5. Step 5: Solve for x
    x = 151,534,518.13/13,931.76
  6. Step 6: Final answer
    x = 10,876.91

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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.