Home / 21,036.46-31,458.73-15,703.42

Finding the Fourth Proportional to 21,036.46, 31,458.73 and 15,703.42

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Solution

The fourth proportional to 21,036.46, 31,458.73 and 15,703.42 is: 23,483.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,036.46 : 31,458.73 = 15,703.42 : x
  2. Step 2: Convert to fraction form
    21,036.46/31,458.73 = 15,703.42/x
  3. Step 3: Cross multiply
    21,036.46x = 31,458.73 × 15,703.42
  4. Step 4: Simplify right side
    21,036.46x = 494,009,649.86
  5. Step 5: Solve for x
    x = 494,009,649.86/21,036.46
  6. Step 6: Final answer
    x = 23,483.50

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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.