Home / 20,345.04-28,050.84-15,571.08

Finding the Fourth Proportional to 20,345.04, 28,050.84 and 15,571.08

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Solution

The fourth proportional to 20,345.04, 28,050.84 and 15,571.08 is: 21,468.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,345.04 : 28,050.84 = 15,571.08 : x
  2. Step 2: Convert to fraction form
    20,345.04/28,050.84 = 15,571.08/x
  3. Step 3: Cross multiply
    20,345.04x = 28,050.84 × 15,571.08
  4. Step 4: Simplify right side
    20,345.04x = 436,781,873.71
  5. Step 5: Solve for x
    x = 436,781,873.71/20,345.04
  6. Step 6: Final answer
    x = 21,468.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.