Home / 31,839.63-47,762.48-13,120.93

Finding the Fourth Proportional to 31,839.63, 47,762.48 and 13,120.93

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Solution

The fourth proportional to 31,839.63, 47,762.48 and 13,120.93 is: 19,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,839.63 : 47,762.48 = 13,120.93 : x
  2. Step 2: Convert to fraction form
    31,839.63/47,762.48 = 13,120.93/x
  3. Step 3: Cross multiply
    31,839.63x = 47,762.48 × 13,120.93
  4. Step 4: Simplify right side
    31,839.63x = 626,688,156.71
  5. Step 5: Solve for x
    x = 626,688,156.71/31,839.63
  6. Step 6: Final answer
    x = 19,682.65

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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.