Home / 21,790.14-30,070.98-12,359.34

Finding the Fourth Proportional to 21,790.14, 30,070.98 and 12,359.34

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Solution

The fourth proportional to 21,790.14, 30,070.98 and 12,359.34 is: 17,056.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,790.14 : 30,070.98 = 12,359.34 : x
  2. Step 2: Convert to fraction form
    21,790.14/30,070.98 = 12,359.34/x
  3. Step 3: Cross multiply
    21,790.14x = 30,070.98 × 12,359.34
  4. Step 4: Simplify right side
    21,790.14x = 371,657,465.95
  5. Step 5: Solve for x
    x = 371,657,465.95/21,790.14
  6. Step 6: Final answer
    x = 17,056.22

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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.