Home / 20,870.88-31,298.40-6,074.88

Finding the Fourth Proportional to 20,870.88, 31,298.40 and 6,074.88

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Solution

The fourth proportional to 20,870.88, 31,298.40 and 6,074.88 is: 9,110.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,870.88 : 31,298.40 = 6,074.88 : x
  2. Step 2: Convert to fraction form
    20,870.88/31,298.40 = 6,074.88/x
  3. Step 3: Cross multiply
    20,870.88x = 31,298.40 × 6,074.88
  4. Step 4: Simplify right side
    20,870.88x = 190,134,024.19
  5. Step 5: Solve for x
    x = 190,134,024.19/20,870.88
  6. Step 6: Final answer
    x = 9,110.01

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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.