Home / 30,470.04-42,036.84-19,134.72

Finding the Fourth Proportional to 30,470.04, 42,036.84 and 19,134.72

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Solution

The fourth proportional to 30,470.04, 42,036.84 and 19,134.72 is: 26,398.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,470.04 : 42,036.84 = 19,134.72 : x
  2. Step 2: Convert to fraction form
    30,470.04/42,036.84 = 19,134.72/x
  3. Step 3: Cross multiply
    30,470.04x = 42,036.84 × 19,134.72
  4. Step 4: Simplify right side
    30,470.04x = 804,363,163.08
  5. Step 5: Solve for x
    x = 804,363,163.08/30,470.04
  6. Step 6: Final answer
    x = 26,398.49

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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.