Home / 28,245,371.76-38,979,907.65-15,686,483.85

Finding the Fourth Proportional to 28,245,371.76, 38,979,907.65 and 15,686,483.85

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Solution

The fourth proportional to 28,245,371.76, 38,979,907.65 and 15,686,483.85 is: 21,648,066.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,245,371.76 : 38,979,907.65 = 15,686,483.85 : x
  2. Step 2: Convert to fraction form
    28,245,371.76/38,979,907.65 = 15,686,483.85/x
  3. Step 3: Cross multiply
    28,245,371.76x = 38,979,907.65 × 15,686,483.85
  4. Step 4: Simplify right side
    28,245,371.76x = 611,457,691,826,216.38
  5. Step 5: Solve for x
    x = 611,457,691,826,216.38/28,245,371.76
  6. Step 6: Final answer
    x = 21,648,066.70

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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.