Home / 39,315.06-58,981.10-13,018.86

Finding the Fourth Proportional to 39,315.06, 58,981.10 and 13,018.86

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Solution

The fourth proportional to 39,315.06, 58,981.10 and 13,018.86 is: 19,531.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,315.06 : 58,981.10 = 13,018.86 : x
  2. Step 2: Convert to fraction form
    39,315.06/58,981.10 = 13,018.86/x
  3. Step 3: Cross multiply
    39,315.06x = 58,981.10 × 13,018.86
  4. Step 4: Simplify right side
    39,315.06x = 767,866,618.45
  5. Step 5: Solve for x
    x = 767,866,618.45/39,315.06
  6. Step 6: Final answer
    x = 19,531.11

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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.