Home / 42,800.08-64,176.60-13,209.76

Finding the Fourth Proportional to 42,800.08, 64,176.60 and 13,209.76

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Solution

The fourth proportional to 42,800.08, 64,176.60 and 13,209.76 is: 19,807.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,800.08 : 64,176.60 = 13,209.76 : x
  2. Step 2: Convert to fraction form
    42,800.08/64,176.60 = 13,209.76/x
  3. Step 3: Cross multiply
    42,800.08x = 64,176.60 × 13,209.76
  4. Step 4: Simplify right side
    42,800.08x = 847,757,483.62
  5. Step 5: Solve for x
    x = 847,757,483.62/42,800.08
  6. Step 6: Final answer
    x = 19,807.38

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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.