Home / 21,875.40-30,177.54-14,318.40

Finding the Fourth Proportional to 21,875.40, 30,177.54 and 14,318.40

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Solution

The fourth proportional to 21,875.40, 30,177.54 and 14,318.40 is: 19,752.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,875.40 : 30,177.54 = 14,318.40 : x
  2. Step 2: Convert to fraction form
    21,875.40/30,177.54 = 14,318.40/x
  3. Step 3: Cross multiply
    21,875.40x = 30,177.54 × 14,318.40
  4. Step 4: Simplify right side
    21,875.40x = 432,093,937.85
  5. Step 5: Solve for x
    x = 432,093,937.85/21,875.40
  6. Step 6: Final answer
    x = 19,752.51

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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.