Home / 28,315.08-42,456.36-11,686.56

Finding the Fourth Proportional to 28,315.08, 42,456.36 and 11,686.56

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Solution

The fourth proportional to 28,315.08, 42,456.36 and 11,686.56 is: 17,523.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,315.08 : 42,456.36 = 11,686.56 : x
  2. Step 2: Convert to fraction form
    28,315.08/42,456.36 = 11,686.56/x
  3. Step 3: Cross multiply
    28,315.08x = 42,456.36 × 11,686.56
  4. Step 4: Simplify right side
    28,315.08x = 496,168,798.52
  5. Step 5: Solve for x
    x = 496,168,798.52/28,315.08
  6. Step 6: Final answer
    x = 17,523.13

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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.