Home / 30,823.81-42,534.41-18,885.51

Finding the Fourth Proportional to 30,823.81, 42,534.41 and 18,885.51

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Solution

The fourth proportional to 30,823.81, 42,534.41 and 18,885.51 is: 26,060.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,823.81 : 42,534.41 = 18,885.51 : x
  2. Step 2: Convert to fraction form
    30,823.81/42,534.41 = 18,885.51/x
  3. Step 3: Cross multiply
    30,823.81x = 42,534.41 × 18,885.51
  4. Step 4: Simplify right side
    30,823.81x = 803,283,930.97
  5. Step 5: Solve for x
    x = 803,283,930.97/30,823.81
  6. Step 6: Final answer
    x = 26,060.50

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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.