Home / 47,426.16-71,147.40-21,130.32

Finding the Fourth Proportional to 47,426.16, 71,147.40 and 21,130.32

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Solution

The fourth proportional to 47,426.16, 71,147.40 and 21,130.32 is: 31,699.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,426.16 : 71,147.40 = 21,130.32 : x
  2. Step 2: Convert to fraction form
    47,426.16/71,147.40 = 21,130.32/x
  3. Step 3: Cross multiply
    47,426.16x = 71,147.40 × 21,130.32
  4. Step 4: Simplify right side
    47,426.16x = 1,503,367,329.17
  5. Step 5: Solve for x
    x = 1,503,367,329.17/47,426.16
  6. Step 6: Final answer
    x = 31,699.12

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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.