Home / 28,041.64-42,061.02-8,320.36

Finding the Fourth Proportional to 28,041.64, 42,061.02 and 8,320.36

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Solution

The fourth proportional to 28,041.64, 42,061.02 and 8,320.36 is: 12,480.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,041.64 : 42,061.02 = 8,320.36 : x
  2. Step 2: Convert to fraction form
    28,041.64/42,061.02 = 8,320.36/x
  3. Step 3: Cross multiply
    28,041.64x = 42,061.02 × 8,320.36
  4. Step 4: Simplify right side
    28,041.64x = 349,962,828.37
  5. Step 5: Solve for x
    x = 349,962,828.37/28,041.64
  6. Step 6: Final answer
    x = 12,480.11

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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.