Home / 12,985.29-17,923.37-7,681.95

Finding the Fourth Proportional to 12,985.29, 17,923.37 and 7,681.95

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Solution

The fourth proportional to 12,985.29, 17,923.37 and 7,681.95 is: 10,603.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,985.29 : 17,923.37 = 7,681.95 : x
  2. Step 2: Convert to fraction form
    12,985.29/17,923.37 = 7,681.95/x
  3. Step 3: Cross multiply
    12,985.29x = 17,923.37 × 7,681.95
  4. Step 4: Simplify right side
    12,985.29x = 137,686,432.17
  5. Step 5: Solve for x
    x = 137,686,432.17/12,985.29
  6. Step 6: Final answer
    x = 10,603.26

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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.