Home / 15,224.40-21,013.68-13,649.76

Finding the Fourth Proportional to 15,224.40, 21,013.68 and 13,649.76

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Solution

The fourth proportional to 15,224.40, 21,013.68 and 13,649.76 is: 18,840.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,224.40 : 21,013.68 = 13,649.76 : x
  2. Step 2: Convert to fraction form
    15,224.40/21,013.68 = 13,649.76/x
  3. Step 3: Cross multiply
    15,224.40x = 21,013.68 × 13,649.76
  4. Step 4: Simplify right side
    15,224.40x = 286,831,688.72
  5. Step 5: Solve for x
    x = 286,831,688.72/15,224.40
  6. Step 6: Final answer
    x = 18,840.26

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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.