Home / 30,901.59-42,637.05-20,848.68

Finding the Fourth Proportional to 30,901.59, 42,637.05 and 20,848.68

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Solution

The fourth proportional to 30,901.59, 42,637.05 and 20,848.68 is: 28,766.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,901.59 : 42,637.05 = 20,848.68 : x
  2. Step 2: Convert to fraction form
    30,901.59/42,637.05 = 20,848.68/x
  3. Step 3: Cross multiply
    30,901.59x = 42,637.05 × 20,848.68
  4. Step 4: Simplify right side
    30,901.59x = 888,926,211.59
  5. Step 5: Solve for x
    x = 888,926,211.59/30,901.59
  6. Step 6: Final answer
    x = 28,766.36

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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.