Home / 28,075.10-42,076.23-11,415.74

Finding the Fourth Proportional to 28,075.10, 42,076.23 and 11,415.74

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Solution

The fourth proportional to 28,075.10, 42,076.23 and 11,415.74 is: 17,108.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,075.10 : 42,076.23 = 11,415.74 : x
  2. Step 2: Convert to fraction form
    28,075.10/42,076.23 = 11,415.74/x
  3. Step 3: Cross multiply
    28,075.10x = 42,076.23 × 11,415.74
  4. Step 4: Simplify right side
    28,075.10x = 480,331,301.86
  5. Step 5: Solve for x
    x = 480,331,301.86/28,075.10
  6. Step 6: Final answer
    x = 17,108.80

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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.