Home / 42,998.20-64,495.02-13,412.64

Finding the Fourth Proportional to 42,998.20, 64,495.02 and 13,412.64

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Solution

The fourth proportional to 42,998.20, 64,495.02 and 13,412.64 is: 20,118.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,998.20 : 64,495.02 = 13,412.64 : x
  2. Step 2: Convert to fraction form
    42,998.20/64,495.02 = 13,412.64/x
  3. Step 3: Cross multiply
    42,998.20x = 64,495.02 × 13,412.64
  4. Step 4: Simplify right side
    42,998.20x = 865,048,701.76
  5. Step 5: Solve for x
    x = 865,048,701.76/42,998.20
  6. Step 6: Final answer
    x = 20,118.25

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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.