Home / 12,681.74-17,461.05-11,515.34

Finding the Fourth Proportional to 12,681.74, 17,461.05 and 11,515.34

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Solution

The fourth proportional to 12,681.74, 17,461.05 and 11,515.34 is: 15,855.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,681.74 : 17,461.05 = 11,515.34 : x
  2. Step 2: Convert to fraction form
    12,681.74/17,461.05 = 11,515.34/x
  3. Step 3: Cross multiply
    12,681.74x = 17,461.05 × 11,515.34
  4. Step 4: Simplify right side
    12,681.74x = 201,069,927.51
  5. Step 5: Solve for x
    x = 201,069,927.51/12,681.74
  6. Step 6: Final answer
    x = 15,855.07

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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.