Home / 30,750.31-42,437.87-17,320.71

Finding the Fourth Proportional to 30,750.31, 42,437.87 and 17,320.71

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Solution

The fourth proportional to 30,750.31, 42,437.87 and 17,320.71 is: 23,903.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,750.31 : 42,437.87 = 17,320.71 : x
  2. Step 2: Convert to fraction form
    30,750.31/42,437.87 = 17,320.71/x
  3. Step 3: Cross multiply
    30,750.31x = 42,437.87 × 17,320.71
  4. Step 4: Simplify right side
    30,750.31x = 735,054,039.29
  5. Step 5: Solve for x
    x = 735,054,039.29/30,750.31
  6. Step 6: Final answer
    x = 23,903.96

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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.