Home / 31,530.69-47,299.37-12,807.93

Finding the Fourth Proportional to 31,530.69, 47,299.37 and 12,807.93

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Solution

The fourth proportional to 31,530.69, 47,299.37 and 12,807.93 is: 19,213.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,530.69 : 47,299.37 = 12,807.93 : x
  2. Step 2: Convert to fraction form
    31,530.69/47,299.37 = 12,807.93/x
  3. Step 3: Cross multiply
    31,530.69x = 47,299.37 × 12,807.93
  4. Step 4: Simplify right side
    31,530.69x = 605,806,955.96
  5. Step 5: Solve for x
    x = 605,806,955.96/31,530.69
  6. Step 6: Final answer
    x = 19,213.25

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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.