Home / 28,039,535.79-38,715,065.45-18,122,289.63

Finding the Fourth Proportional to 28,039,535.79, 38,715,065.45 and 18,122,289.63

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Solution

The fourth proportional to 28,039,535.79, 38,715,065.45 and 18,122,289.63 is: 25,022,013.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,039,535.79 : 38,715,065.45 = 18,122,289.63 : x
  2. Step 2: Convert to fraction form
    28,039,535.79/38,715,065.45 = 18,122,289.63/x
  3. Step 3: Cross multiply
    28,039,535.79x = 38,715,065.45 × 18,122,289.63
  4. Step 4: Simplify right side
    28,039,535.79x = 701,605,629,129,306.25
  5. Step 5: Solve for x
    x = 701,605,629,129,306.25/28,039,535.79
  6. Step 6: Final answer
    x = 25,022,013.00

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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.