Home / 12,877.81-19,292.20-7,334.98

Finding the Fourth Proportional to 12,877.81, 19,292.20 and 7,334.98

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Solution

The fourth proportional to 12,877.81, 19,292.20 and 7,334.98 is: 10,988.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,877.81 : 19,292.20 = 7,334.98 : x
  2. Step 2: Convert to fraction form
    12,877.81/19,292.20 = 7,334.98/x
  3. Step 3: Cross multiply
    12,877.81x = 19,292.20 × 7,334.98
  4. Step 4: Simplify right side
    12,877.81x = 141,507,834.59
  5. Step 5: Solve for x
    x = 141,507,834.59/12,877.81
  6. Step 6: Final answer
    x = 10,988.50

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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.