Home / 21,079.95-31,615.86-9,832.18

Finding the Fourth Proportional to 21,079.95, 31,615.86 and 9,832.18

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Solution

The fourth proportional to 21,079.95, 31,615.86 and 9,832.18 is: 14,746.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,079.95 : 31,615.86 = 9,832.18 : x
  2. Step 2: Convert to fraction form
    21,079.95/31,615.86 = 9,832.18/x
  3. Step 3: Cross multiply
    21,079.95x = 31,615.86 × 9,832.18
  4. Step 4: Simplify right side
    21,079.95x = 310,852,826.37
  5. Step 5: Solve for x
    x = 310,852,826.37/21,079.95
  6. Step 6: Final answer
    x = 14,746.37

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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.