Home / 21,087.59-31,646.95-9,994.31

Finding the Fourth Proportional to 21,087.59, 31,646.95 and 9,994.31

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Solution

The fourth proportional to 21,087.59, 31,646.95 and 9,994.31 is: 14,998.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,087.59 : 31,646.95 = 9,994.31 : x
  2. Step 2: Convert to fraction form
    21,087.59/31,646.95 = 9,994.31/x
  3. Step 3: Cross multiply
    21,087.59x = 31,646.95 × 9,994.31
  4. Step 4: Simplify right side
    21,087.59x = 316,289,509.54
  5. Step 5: Solve for x
    x = 316,289,509.54/21,087.59
  6. Step 6: Final answer
    x = 14,998.85

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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.