Home / 31,312.80-43,212.02-17,885.84

Finding the Fourth Proportional to 31,312.80, 43,212.02 and 17,885.84

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Solution

The fourth proportional to 31,312.80, 43,212.02 and 17,885.84 is: 24,682.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,312.80 : 43,212.02 = 17,885.84 : x
  2. Step 2: Convert to fraction form
    31,312.80/43,212.02 = 17,885.84/x
  3. Step 3: Cross multiply
    31,312.80x = 43,212.02 × 17,885.84
  4. Step 4: Simplify right side
    31,312.80x = 772,882,970.31
  5. Step 5: Solve for x
    x = 772,882,970.31/31,312.80
  6. Step 6: Final answer
    x = 24,682.65

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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.