Home / 42,887.99-64,353.94-20,424.08

Finding the Fourth Proportional to 42,887.99, 64,353.94 and 20,424.08

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Solution

The fourth proportional to 42,887.99, 64,353.94 and 20,424.08 is: 30,646.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,887.99 : 64,353.94 = 20,424.08 : x
  2. Step 2: Convert to fraction form
    42,887.99/64,353.94 = 20,424.08/x
  3. Step 3: Cross multiply
    42,887.99x = 64,353.94 × 20,424.08
  4. Step 4: Simplify right side
    42,887.99x = 1,314,370,128.70
  5. Step 5: Solve for x
    x = 1,314,370,128.70/42,887.99
  6. Step 6: Final answer
    x = 30,646.58

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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.