Home / 12,445,406.40-18,668,109.60-11,689,579.20

Finding the Fourth Proportional to 12,445,406.40, 18,668,109.60 and 11,689,579.20

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Solution

The fourth proportional to 12,445,406.40, 18,668,109.60 and 11,689,579.20 is: 17,534,368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,445,406.40 : 18,668,109.60 = 11,689,579.20 : x
  2. Step 2: Convert to fraction form
    12,445,406.40/18,668,109.60 = 11,689,579.20/x
  3. Step 3: Cross multiply
    12,445,406.40x = 18,668,109.60 × 11,689,579.20
  4. Step 4: Simplify right side
    12,445,406.40x = 218,222,345,683,480.31
  5. Step 5: Solve for x
    x = 218,222,345,683,480.31/12,445,406.40
  6. Step 6: Final answer
    x = 17,534,368.80

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1.5x scale

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.