Home / 21,332.40-29,438.64-11,901.24

Finding the Fourth Proportional to 21,332.40, 29,438.64 and 11,901.24

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Solution

The fourth proportional to 21,332.40, 29,438.64 and 11,901.24 is: 16,423.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,332.40 : 29,438.64 = 11,901.24 : x
  2. Step 2: Convert to fraction form
    21,332.40/29,438.64 = 11,901.24/x
  3. Step 3: Cross multiply
    21,332.40x = 29,438.64 × 11,901.24
  4. Step 4: Simplify right side
    21,332.40x = 350,356,319.91
  5. Step 5: Solve for x
    x = 350,356,319.91/21,332.40
  6. Step 6: Final answer
    x = 16,423.67

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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.