Home / 30,721.12-46,068.65-12,959.75

Finding the Fourth Proportional to 30,721.12, 46,068.65 and 12,959.75

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Solution

The fourth proportional to 30,721.12, 46,068.65 and 12,959.75 is: 19,434.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,721.12 : 46,068.65 = 12,959.75 : x
  2. Step 2: Convert to fraction form
    30,721.12/46,068.65 = 12,959.75/x
  3. Step 3: Cross multiply
    30,721.12x = 46,068.65 × 12,959.75
  4. Step 4: Simplify right side
    30,721.12x = 597,038,026.67
  5. Step 5: Solve for x
    x = 597,038,026.67/30,721.12
  6. Step 6: Final answer
    x = 19,434.12

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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.