Home / 19,787.76-29,681.64-11,574

Finding the Fourth Proportional to 19,787.76, 29,681.64 and 11,574

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Solution

The fourth proportional to 19,787.76, 29,681.64 and 11,574 is: 17,361.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,787.76 : 29,681.64 = 11,574 : x
  2. Step 2: Convert to fraction form
    19,787.76/29,681.64 = 11,574/x
  3. Step 3: Cross multiply
    19,787.76x = 29,681.64 × 11,574
  4. Step 4: Simplify right side
    19,787.76x = 343,535,301.36
  5. Step 5: Solve for x
    x = 343,535,301.36/19,787.76
  6. Step 6: Final answer
    x = 17,361.00

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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.