Home / 13,916.25-20,875.59-3,528

Finding the Fourth Proportional to 13,916.25, 20,875.59 and 3,528

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Solution

The fourth proportional to 13,916.25, 20,875.59 and 3,528 is: 5,292.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,916.25 : 20,875.59 = 3,528 : x
  2. Step 2: Convert to fraction form
    13,916.25/20,875.59 = 3,528/x
  3. Step 3: Cross multiply
    13,916.25x = 20,875.59 × 3,528
  4. Step 4: Simplify right side
    13,916.25x = 73,649,081.52
  5. Step 5: Solve for x
    x = 73,649,081.52/13,916.25
  6. Step 6: Final answer
    x = 5,292.31

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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.