Home / 30,660.65-42,284.40-19,895.24

Finding the Fourth Proportional to 30,660.65, 42,284.40 and 19,895.24

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Solution

The fourth proportional to 30,660.65, 42,284.40 and 19,895.24 is: 27,437.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,660.65 : 42,284.40 = 19,895.24 : x
  2. Step 2: Convert to fraction form
    30,660.65/42,284.40 = 19,895.24/x
  3. Step 3: Cross multiply
    30,660.65x = 42,284.40 × 19,895.24
  4. Step 4: Simplify right side
    30,660.65x = 841,258,317.36
  5. Step 5: Solve for x
    x = 841,258,317.36/30,660.65
  6. Step 6: Final answer
    x = 27,437.72

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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.