Home / 19,821.45-27,353.59-10,869.10

Finding the Fourth Proportional to 19,821.45, 27,353.59 and 10,869.10

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Solution

The fourth proportional to 19,821.45, 27,353.59 and 10,869.10 is: 14,999.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,821.45 : 27,353.59 = 10,869.10 : x
  2. Step 2: Convert to fraction form
    19,821.45/27,353.59 = 10,869.10/x
  3. Step 3: Cross multiply
    19,821.45x = 27,353.59 × 10,869.10
  4. Step 4: Simplify right side
    19,821.45x = 297,308,809.51
  5. Step 5: Solve for x
    x = 297,308,809.51/19,821.45
  6. Step 6: Final answer
    x = 14,999.35

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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.