Home / 19,320.90-26,661.48-10,821.56

Finding the Fourth Proportional to 19,320.90, 26,661.48 and 10,821.56

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Solution

The fourth proportional to 19,320.90, 26,661.48 and 10,821.56 is: 14,932.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,320.90 : 26,661.48 = 10,821.56 : x
  2. Step 2: Convert to fraction form
    19,320.90/26,661.48 = 10,821.56/x
  3. Step 3: Cross multiply
    19,320.90x = 26,661.48 × 10,821.56
  4. Step 4: Simplify right side
    19,320.90x = 288,518,805.51
  5. Step 5: Solve for x
    x = 288,518,805.51/19,320.90
  6. Step 6: Final answer
    x = 14,932.99

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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.