Home / 21,030.56-29,025.51-12,647.06

Finding the Fourth Proportional to 21,030.56, 29,025.51 and 12,647.06

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Solution

The fourth proportional to 21,030.56, 29,025.51 and 12,647.06 is: 17,454.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,030.56 : 29,025.51 = 12,647.06 : x
  2. Step 2: Convert to fraction form
    21,030.56/29,025.51 = 12,647.06/x
  3. Step 3: Cross multiply
    21,030.56x = 29,025.51 × 12,647.06
  4. Step 4: Simplify right side
    21,030.56x = 367,087,366.50
  5. Step 5: Solve for x
    x = 367,087,366.50/21,030.56
  6. Step 6: Final answer
    x = 17,454.95

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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.