Home / 28,516.69-42,756.81-11,888.20

Finding the Fourth Proportional to 28,516.69, 42,756.81 and 11,888.20

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Solution

The fourth proportional to 28,516.69, 42,756.81 and 11,888.20 is: 17,824.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,516.69 : 42,756.81 = 11,888.20 : x
  2. Step 2: Convert to fraction form
    28,516.69/42,756.81 = 11,888.20/x
  3. Step 3: Cross multiply
    28,516.69x = 42,756.81 × 11,888.20
  4. Step 4: Simplify right side
    28,516.69x = 508,301,508.64
  5. Step 5: Solve for x
    x = 508,301,508.64/28,516.69
  6. Step 6: Final answer
    x = 17,824.70

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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.