Home / 30,567.74-42,187.11-19,988.06

Finding the Fourth Proportional to 30,567.74, 42,187.11 and 19,988.06

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Solution

The fourth proportional to 30,567.74, 42,187.11 and 19,988.06 is: 27,585.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,567.74 : 42,187.11 = 19,988.06 : x
  2. Step 2: Convert to fraction form
    30,567.74/42,187.11 = 19,988.06/x
  3. Step 3: Cross multiply
    30,567.74x = 42,187.11 × 19,988.06
  4. Step 4: Simplify right side
    30,567.74x = 843,238,485.91
  5. Step 5: Solve for x
    x = 843,238,485.91/30,567.74
  6. Step 6: Final answer
    x = 27,585.90

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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.