Home / 21,069.45-31,603.86-6,278.46

Finding the Fourth Proportional to 21,069.45, 31,603.86 and 6,278.46

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Solution

The fourth proportional to 21,069.45, 31,603.86 and 6,278.46 is: 9,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,069.45 : 31,603.86 = 6,278.46 : x
  2. Step 2: Convert to fraction form
    21,069.45/31,603.86 = 6,278.46/x
  3. Step 3: Cross multiply
    21,069.45x = 31,603.86 × 6,278.46
  4. Step 4: Simplify right side
    21,069.45x = 198,423,570.86
  5. Step 5: Solve for x
    x = 198,423,570.86/21,069.45
  6. Step 6: Final answer
    x = 9,417.60

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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.