Home / 12,302,953.20-18,454,429.80-5,128,499.70

Finding the Fourth Proportional to 12,302,953.20, 18,454,429.80 and 5,128,499.70

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Solution

The fourth proportional to 12,302,953.20, 18,454,429.80 and 5,128,499.70 is: 7,692,749.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,302,953.20 : 18,454,429.80 = 5,128,499.70 : x
  2. Step 2: Convert to fraction form
    12,302,953.20/18,454,429.80 = 5,128,499.70/x
  3. Step 3: Cross multiply
    12,302,953.20x = 18,454,429.80 × 5,128,499.70
  4. Step 4: Simplify right side
    12,302,953.20x = 94,643,537,692,971.06
  5. Step 5: Solve for x
    x = 94,643,537,692,971.06/12,302,953.20
  6. Step 6: Final answer
    x = 7,692,749.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.