Home / 19,869.58-27,420.54-10,917.32

Finding the Fourth Proportional to 19,869.58, 27,420.54 and 10,917.32

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Solution

The fourth proportional to 19,869.58, 27,420.54 and 10,917.32 is: 15,066.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,869.58 : 27,420.54 = 10,917.32 : x
  2. Step 2: Convert to fraction form
    19,869.58/27,420.54 = 10,917.32/x
  3. Step 3: Cross multiply
    19,869.58x = 27,420.54 × 10,917.32
  4. Step 4: Simplify right side
    19,869.58x = 299,358,809.75
  5. Step 5: Solve for x
    x = 299,358,809.75/19,869.58
  6. Step 6: Final answer
    x = 15,066.19

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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.