Home / 30,681.12-42,347.46-18,754.46

Finding the Fourth Proportional to 30,681.12, 42,347.46 and 18,754.46

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Solution

The fourth proportional to 30,681.12, 42,347.46 and 18,754.46 is: 25,885.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,681.12 : 42,347.46 = 18,754.46 : x
  2. Step 2: Convert to fraction form
    30,681.12/42,347.46 = 18,754.46/x
  3. Step 3: Cross multiply
    30,681.12x = 42,347.46 × 18,754.46
  4. Step 4: Simplify right side
    30,681.12x = 794,203,532.93
  5. Step 5: Solve for x
    x = 794,203,532.93/30,681.12
  6. Step 6: Final answer
    x = 25,885.74

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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.