Home / 15,541.68-21,411.36-10,817.76

Finding the Fourth Proportional to 15,541.68, 21,411.36 and 10,817.76

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Solution

The fourth proportional to 15,541.68, 21,411.36 and 10,817.76 is: 14,903.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,541.68 : 21,411.36 = 10,817.76 : x
  2. Step 2: Convert to fraction form
    15,541.68/21,411.36 = 10,817.76/x
  3. Step 3: Cross multiply
    15,541.68x = 21,411.36 × 10,817.76
  4. Step 4: Simplify right side
    15,541.68x = 231,622,953.75
  5. Step 5: Solve for x
    x = 231,622,953.75/15,541.68
  6. Step 6: Final answer
    x = 14,903.34

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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.