Home / 21,460.95-29,615.63-13,516.47

Finding the Fourth Proportional to 21,460.95, 29,615.63 and 13,516.47

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Solution

The fourth proportional to 21,460.95, 29,615.63 and 13,516.47 is: 18,652.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,460.95 : 29,615.63 = 13,516.47 : x
  2. Step 2: Convert to fraction form
    21,460.95/29,615.63 = 13,516.47/x
  3. Step 3: Cross multiply
    21,460.95x = 29,615.63 × 13,516.47
  4. Step 4: Simplify right side
    21,460.95x = 400,298,706.84
  5. Step 5: Solve for x
    x = 400,298,706.84/21,460.95
  6. Step 6: Final answer
    x = 18,652.42

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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.