Home / 30,471.10-42,068.28-19,150.18

Finding the Fourth Proportional to 30,471.10, 42,068.28 and 19,150.18

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Solution

The fourth proportional to 30,471.10, 42,068.28 and 19,150.18 is: 26,438.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,471.10 : 42,068.28 = 19,150.18 : x
  2. Step 2: Convert to fraction form
    30,471.10/42,068.28 = 19,150.18/x
  3. Step 3: Cross multiply
    30,471.10x = 42,068.28 × 19,150.18
  4. Step 4: Simplify right side
    30,471.10x = 805,615,134.29
  5. Step 5: Solve for x
    x = 805,615,134.29/30,471.10
  6. Step 6: Final answer
    x = 26,438.66

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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.