Home / 42,670.12-64,006.12-13,087.30

Finding the Fourth Proportional to 42,670.12, 64,006.12 and 13,087.30

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Solution

The fourth proportional to 42,670.12, 64,006.12 and 13,087.30 is: 19,631.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,670.12 : 64,006.12 = 13,087.30 : x
  2. Step 2: Convert to fraction form
    42,670.12/64,006.12 = 13,087.30/x
  3. Step 3: Cross multiply
    42,670.12x = 64,006.12 × 13,087.30
  4. Step 4: Simplify right side
    42,670.12x = 837,667,294.28
  5. Step 5: Solve for x
    x = 837,667,294.28/42,670.12
  6. Step 6: Final answer
    x = 19,631.24

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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.