Home / 28,430.96-42,646.52-9,958.64

Finding the Fourth Proportional to 28,430.96, 42,646.52 and 9,958.64

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Solution

The fourth proportional to 28,430.96, 42,646.52 and 9,958.64 is: 14,937.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,430.96 : 42,646.52 = 9,958.64 : x
  2. Step 2: Convert to fraction form
    28,430.96/42,646.52 = 9,958.64/x
  3. Step 3: Cross multiply
    28,430.96x = 42,646.52 × 9,958.64
  4. Step 4: Simplify right side
    28,430.96x = 424,701,339.93
  5. Step 5: Solve for x
    x = 424,701,339.93/28,430.96
  6. Step 6: Final answer
    x = 14,937.99

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.