Home / 28,345.12-42,520.56-7,570.08

Finding the Fourth Proportional to 28,345.12, 42,520.56 and 7,570.08

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Solution

The fourth proportional to 28,345.12, 42,520.56 and 7,570.08 is: 11,355.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,345.12 : 42,520.56 = 7,570.08 : x
  2. Step 2: Convert to fraction form
    28,345.12/42,520.56 = 7,570.08/x
  3. Step 3: Cross multiply
    28,345.12x = 42,520.56 × 7,570.08
  4. Step 4: Simplify right side
    28,345.12x = 321,884,040.84
  5. Step 5: Solve for x
    x = 321,884,040.84/28,345.12
  6. Step 6: Final answer
    x = 11,355.89

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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.