Home / 28,111.02-42,166.52-11,478.88

Finding the Fourth Proportional to 28,111.02, 42,166.52 and 11,478.88

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Solution

The fourth proportional to 28,111.02, 42,166.52 and 11,478.88 is: 17,218.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,111.02 : 42,166.52 = 11,478.88 : x
  2. Step 2: Convert to fraction form
    28,111.02/42,166.52 = 11,478.88/x
  3. Step 3: Cross multiply
    28,111.02x = 42,166.52 × 11,478.88
  4. Step 4: Simplify right side
    28,111.02x = 484,024,526.03
  5. Step 5: Solve for x
    x = 484,024,526.03/28,111.02
  6. Step 6: Final answer
    x = 17,218.32

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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.