Home / 13,278.48-18,323.58-7,612.95

Finding the Fourth Proportional to 13,278.48, 18,323.58 and 7,612.95

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Solution

The fourth proportional to 13,278.48, 18,323.58 and 7,612.95 is: 10,505.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,278.48 : 18,323.58 = 7,612.95 : x
  2. Step 2: Convert to fraction form
    13,278.48/18,323.58 = 7,612.95/x
  3. Step 3: Cross multiply
    13,278.48x = 18,323.58 × 7,612.95
  4. Step 4: Simplify right side
    13,278.48x = 139,496,498.36
  5. Step 5: Solve for x
    x = 139,496,498.36/13,278.48
  6. Step 6: Final answer
    x = 10,505.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.