Home / 30,798.15-42,501.55-16,651.10

Finding the Fourth Proportional to 30,798.15, 42,501.55 and 16,651.10

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Solution

The fourth proportional to 30,798.15, 42,501.55 and 16,651.10 is: 22,978.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,798.15 : 42,501.55 = 16,651.10 : x
  2. Step 2: Convert to fraction form
    30,798.15/42,501.55 = 16,651.10/x
  3. Step 3: Cross multiply
    30,798.15x = 42,501.55 × 16,651.10
  4. Step 4: Simplify right side
    30,798.15x = 707,697,346.70
  5. Step 5: Solve for x
    x = 707,697,346.70/30,798.15
  6. Step 6: Final answer
    x = 22,978.57

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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.