Home / 14,775.36-20,390.40-8,807.52

Finding the Fourth Proportional to 14,775.36, 20,390.40 and 8,807.52

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Solution

The fourth proportional to 14,775.36, 20,390.40 and 8,807.52 is: 12,154.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,775.36 : 20,390.40 = 8,807.52 : x
  2. Step 2: Convert to fraction form
    14,775.36/20,390.40 = 8,807.52/x
  3. Step 3: Cross multiply
    14,775.36x = 20,390.40 × 8,807.52
  4. Step 4: Simplify right side
    14,775.36x = 179,588,855.81
  5. Step 5: Solve for x
    x = 179,588,855.81/14,775.36
  6. Step 6: Final answer
    x = 12,154.62

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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.