Home / 28,613.74-42,912.81-11,971.08

Finding the Fourth Proportional to 28,613.74, 42,912.81 and 11,971.08

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Solution

The fourth proportional to 28,613.74, 42,912.81 and 11,971.08 is: 17,953.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,613.74 : 42,912.81 = 11,971.08 : x
  2. Step 2: Convert to fraction form
    28,613.74/42,912.81 = 11,971.08/x
  3. Step 3: Cross multiply
    28,613.74x = 42,912.81 × 11,971.08
  4. Step 4: Simplify right side
    28,613.74x = 513,712,681.53
  5. Step 5: Solve for x
    x = 513,712,681.53/28,613.74
  6. Step 6: Final answer
    x = 17,953.36

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1.5x scale

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.