Home / 34,357.86-47,421.81-20,215.26

Finding the Fourth Proportional to 34,357.86, 47,421.81 and 20,215.26

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Solution

The fourth proportional to 34,357.86, 47,421.81 and 20,215.26 is: 27,901.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,357.86 : 47,421.81 = 20,215.26 : x
  2. Step 2: Convert to fraction form
    34,357.86/47,421.81 = 20,215.26/x
  3. Step 3: Cross multiply
    34,357.86x = 47,421.81 × 20,215.26
  4. Step 4: Simplify right side
    34,357.86x = 958,644,218.82
  5. Step 5: Solve for x
    x = 958,644,218.82/34,357.86
  6. Step 6: Final answer
    x = 27,901.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.