Home / 18,681.38-25,779.02-10,506.21

Finding the Fourth Proportional to 18,681.38, 25,779.02 and 10,506.21

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Solution

The fourth proportional to 18,681.38, 25,779.02 and 10,506.21 is: 14,497.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,681.38 : 25,779.02 = 10,506.21 : x
  2. Step 2: Convert to fraction form
    18,681.38/25,779.02 = 10,506.21/x
  3. Step 3: Cross multiply
    18,681.38x = 25,779.02 × 10,506.21
  4. Step 4: Simplify right side
    18,681.38x = 270,839,648.51
  5. Step 5: Solve for x
    x = 270,839,648.51/18,681.38
  6. Step 6: Final answer
    x = 14,497.84

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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.