Home / 20,484.81-28,270.05-11,533.30

Finding the Fourth Proportional to 20,484.81, 28,270.05 and 11,533.30

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Solution

The fourth proportional to 20,484.81, 28,270.05 and 11,533.30 is: 15,916.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,484.81 : 28,270.05 = 11,533.30 : x
  2. Step 2: Convert to fraction form
    20,484.81/28,270.05 = 11,533.30/x
  3. Step 3: Cross multiply
    20,484.81x = 28,270.05 × 11,533.30
  4. Step 4: Simplify right side
    20,484.81x = 326,046,853.74
  5. Step 5: Solve for x
    x = 326,046,853.74/20,484.81
  6. Step 6: Final answer
    x = 15,916.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.