Home / 13,210.37-19,822.05-5,312.56

Finding the Fourth Proportional to 13,210.37, 19,822.05 and 5,312.56

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Solution

The fourth proportional to 13,210.37, 19,822.05 and 5,312.56 is: 7,971.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,210.37 : 19,822.05 = 5,312.56 : x
  2. Step 2: Convert to fraction form
    13,210.37/19,822.05 = 5,312.56/x
  3. Step 3: Cross multiply
    13,210.37x = 19,822.05 × 5,312.56
  4. Step 4: Simplify right side
    13,210.37x = 105,305,829.95
  5. Step 5: Solve for x
    x = 105,305,829.95/13,210.37
  6. Step 6: Final answer
    x = 7,971.45

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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.