Home / 30,545.85-42,155.63-17,118.35

Finding the Fourth Proportional to 30,545.85, 42,155.63 and 17,118.35

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Solution

The fourth proportional to 30,545.85, 42,155.63 and 17,118.35 is: 23,624.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,545.85 : 42,155.63 = 17,118.35 : x
  2. Step 2: Convert to fraction form
    30,545.85/42,155.63 = 17,118.35/x
  3. Step 3: Cross multiply
    30,545.85x = 42,155.63 × 17,118.35
  4. Step 4: Simplify right side
    30,545.85x = 721,634,618.03
  5. Step 5: Solve for x
    x = 721,634,618.03/30,545.85
  6. Step 6: Final answer
    x = 23,624.64

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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.