Home / 18,848.71-28,277.75-13,312.86

Finding the Fourth Proportional to 18,848.71, 28,277.75 and 13,312.86

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Solution

The fourth proportional to 18,848.71, 28,277.75 and 13,312.86 is: 19,972.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,848.71 : 28,277.75 = 13,312.86 : x
  2. Step 2: Convert to fraction form
    18,848.71/28,277.75 = 13,312.86/x
  3. Step 3: Cross multiply
    18,848.71x = 28,277.75 × 13,312.86
  4. Step 4: Simplify right side
    18,848.71x = 376,457,726.87
  5. Step 5: Solve for x
    x = 376,457,726.87/18,848.71
  6. Step 6: Final answer
    x = 19,972.60

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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.