Home / 28,140.05-42,172.87-14,785.76

Finding the Fourth Proportional to 28,140.05, 42,172.87 and 14,785.76

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Solution

The fourth proportional to 28,140.05, 42,172.87 and 14,785.76 is: 22,159.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,140.05 : 42,172.87 = 14,785.76 : x
  2. Step 2: Convert to fraction form
    28,140.05/42,172.87 = 14,785.76/x
  3. Step 3: Cross multiply
    28,140.05x = 42,172.87 × 14,785.76
  4. Step 4: Simplify right side
    28,140.05x = 623,557,971.22
  5. Step 5: Solve for x
    x = 623,557,971.22/28,140.05
  6. Step 6: Final answer
    x = 22,159.09

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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.