Home / 30,830.18-42,545.47-17,405.80

Finding the Fourth Proportional to 30,830.18, 42,545.47 and 17,405.80

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Solution

The fourth proportional to 30,830.18, 42,545.47 and 17,405.80 is: 24,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,830.18 : 42,545.47 = 17,405.80 : x
  2. Step 2: Convert to fraction form
    30,830.18/42,545.47 = 17,405.80/x
  3. Step 3: Cross multiply
    30,830.18x = 42,545.47 × 17,405.80
  4. Step 4: Simplify right side
    30,830.18x = 740,537,941.73
  5. Step 5: Solve for x
    x = 740,537,941.73/30,830.18
  6. Step 6: Final answer
    x = 24,019.90

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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.