Home / 10,431,028.80-15,646,543.20-8,938,036.80

Finding the Fourth Proportional to 10,431,028.80, 15,646,543.20 and 8,938,036.80

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Solution

The fourth proportional to 10,431,028.80, 15,646,543.20 and 8,938,036.80 is: 13,407,055.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,431,028.80 : 15,646,543.20 = 8,938,036.80 : x
  2. Step 2: Convert to fraction form
    10,431,028.80/15,646,543.20 = 8,938,036.80/x
  3. Step 3: Cross multiply
    10,431,028.80x = 15,646,543.20 × 8,938,036.80
  4. Step 4: Simplify right side
    10,431,028.80x = 139,849,378,914,389.77
  5. Step 5: Solve for x
    x = 139,849,378,914,389.77/10,431,028.80
  6. Step 6: Final answer
    x = 13,407,055.20

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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.