Home / 12,931.47-19,406.97-10,365.39

Finding the Fourth Proportional to 12,931.47, 19,406.97 and 10,365.39

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Solution

The fourth proportional to 12,931.47, 19,406.97 and 10,365.39 is: 15,555.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,931.47 : 19,406.97 = 10,365.39 : x
  2. Step 2: Convert to fraction form
    12,931.47/19,406.97 = 10,365.39/x
  3. Step 3: Cross multiply
    12,931.47x = 19,406.97 × 10,365.39
  4. Step 4: Simplify right side
    12,931.47x = 201,160,812.77
  5. Step 5: Solve for x
    x = 201,160,812.77/12,931.47
  6. Step 6: Final answer
    x = 15,555.91

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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.