Home / 14,308.80-21,402.45-12,838.65

Finding the Fourth Proportional to 14,308.80, 21,402.45 and 12,838.65

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Solution

The fourth proportional to 14,308.80, 21,402.45 and 12,838.65 is: 19,203.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,308.80 : 21,402.45 = 12,838.65 : x
  2. Step 2: Convert to fraction form
    14,308.80/21,402.45 = 12,838.65/x
  3. Step 3: Cross multiply
    14,308.80x = 21,402.45 × 12,838.65
  4. Step 4: Simplify right side
    14,308.80x = 274,778,564.69
  5. Step 5: Solve for x
    x = 274,778,564.69/14,308.80
  6. Step 6: Final answer
    x = 19,203.47

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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.