Home / 12,931,330.48-19,404,557.88-7,178,908.12

Finding the Fourth Proportional to 12,931,330.48, 19,404,557.88 and 7,178,908.12

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Solution

The fourth proportional to 12,931,330.48, 19,404,557.88 and 7,178,908.12 is: 10,772,560.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931,330.48 : 19,404,557.88 = 7,178,908.12 : x
  2. Step 2: Convert to fraction form
    12,931,330.48/19,404,557.88 = 7,178,908.12/x
  3. Step 3: Cross multiply
    12,931,330.48x = 19,404,557.88 × 7,178,908.12
  4. Step 4: Simplify right side
    12,931,330.48x = 139,303,538,129,741.98
  5. Step 5: Solve for x
    x = 139,303,538,129,741.98/12,931,330.48
  6. Step 6: Final answer
    x = 10,772,560.36

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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.