Home / 15,788.80-23,682.90-6,428.74

Finding the Fourth Proportional to 15,788.80, 23,682.90 and 6,428.74

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Solution

The fourth proportional to 15,788.80, 23,682.90 and 6,428.74 is: 9,642.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,788.80 : 23,682.90 = 6,428.74 : x
  2. Step 2: Convert to fraction form
    15,788.80/23,682.90 = 6,428.74/x
  3. Step 3: Cross multiply
    15,788.80x = 23,682.90 × 6,428.74
  4. Step 4: Simplify right side
    15,788.80x = 152,251,206.55
  5. Step 5: Solve for x
    x = 152,251,206.55/15,788.80
  6. Step 6: Final answer
    x = 9,642.99

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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.