Home / 28,513.17-39,324.56-21,461.31

Finding the Fourth Proportional to 28,513.17, 39,324.56 and 21,461.31

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Solution

The fourth proportional to 28,513.17, 39,324.56 and 21,461.31 is: 29,598.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,513.17 : 39,324.56 = 21,461.31 : x
  2. Step 2: Convert to fraction form
    28,513.17/39,324.56 = 21,461.31/x
  3. Step 3: Cross multiply
    28,513.17x = 39,324.56 × 21,461.31
  4. Step 4: Simplify right side
    28,513.17x = 843,956,465.47
  5. Step 5: Solve for x
    x = 843,956,465.47/28,513.17
  6. Step 6: Final answer
    x = 29,598.83

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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.