Home / 31,287.45-46,931.15-12,567.49

Finding the Fourth Proportional to 31,287.45, 46,931.15 and 12,567.49

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Solution

The fourth proportional to 31,287.45, 46,931.15 and 12,567.49 is: 18,851.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,287.45 : 46,931.15 = 12,567.49 : x
  2. Step 2: Convert to fraction form
    31,287.45/46,931.15 = 12,567.49/x
  3. Step 3: Cross multiply
    31,287.45x = 46,931.15 × 12,567.49
  4. Step 4: Simplify right side
    31,287.45x = 589,806,828.51
  5. Step 5: Solve for x
    x = 589,806,828.51/31,287.45
  6. Step 6: Final answer
    x = 18,851.23

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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.