Home / 28,681.95-39,570.03-21,146.19

Finding the Fourth Proportional to 28,681.95, 39,570.03 and 21,146.19

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Solution

The fourth proportional to 28,681.95, 39,570.03 and 21,146.19 is: 29,173.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,681.95 : 39,570.03 = 21,146.19 : x
  2. Step 2: Convert to fraction form
    28,681.95/39,570.03 = 21,146.19/x
  3. Step 3: Cross multiply
    28,681.95x = 39,570.03 × 21,146.19
  4. Step 4: Simplify right side
    28,681.95x = 836,755,372.69
  5. Step 5: Solve for x
    x = 836,755,372.69/28,681.95
  6. Step 6: Final answer
    x = 29,173.59

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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.