Home / 13,143,775.48-18,139,106.55-7,918,428.56

Finding the Fourth Proportional to 13,143,775.48, 18,139,106.55 and 7,918,428.56

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Solution

The fourth proportional to 13,143,775.48, 18,139,106.55 and 7,918,428.56 is: 10,927,850.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,143,775.48 : 18,139,106.55 = 7,918,428.56 : x
  2. Step 2: Convert to fraction form
    13,143,775.48/18,139,106.55 = 7,918,428.56/x
  3. Step 3: Cross multiply
    13,143,775.48x = 18,139,106.55 × 7,918,428.56
  4. Step 4: Simplify right side
    13,143,775.48x = 143,633,219,358,403.06
  5. Step 5: Solve for x
    x = 143,633,219,358,403.06/13,143,775.48
  6. Step 6: Final answer
    x = 10,927,850.95

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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.