Home / 42,726.05-64,089.22-13,143.68

Finding the Fourth Proportional to 42,726.05, 64,089.22 and 13,143.68

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Solution

The fourth proportional to 42,726.05, 64,089.22 and 13,143.68 is: 19,715.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,726.05 : 64,089.22 = 13,143.68 : x
  2. Step 2: Convert to fraction form
    42,726.05/64,089.22 = 13,143.68/x
  3. Step 3: Cross multiply
    42,726.05x = 64,089.22 × 13,143.68
  4. Step 4: Simplify right side
    42,726.05x = 842,368,199.13
  5. Step 5: Solve for x
    x = 842,368,199.13/42,726.05
  6. Step 6: Final answer
    x = 19,715.56

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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.