Home / 30,451.02-42,019.47-19,116.90

Finding the Fourth Proportional to 30,451.02, 42,019.47 and 19,116.90

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Solution

The fourth proportional to 30,451.02, 42,019.47 and 19,116.90 is: 26,379.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,451.02 : 42,019.47 = 19,116.90 : x
  2. Step 2: Convert to fraction form
    30,451.02/42,019.47 = 19,116.90/x
  3. Step 3: Cross multiply
    30,451.02x = 42,019.47 × 19,116.90
  4. Step 4: Simplify right side
    30,451.02x = 803,282,006.04
  5. Step 5: Solve for x
    x = 803,282,006.04/30,451.02
  6. Step 6: Final answer
    x = 26,379.48

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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.