Home / 20,332.53-28,060.83-12,784.50

Finding the Fourth Proportional to 20,332.53, 28,060.83 and 12,784.50

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Solution

The fourth proportional to 20,332.53, 28,060.83 and 12,784.50 is: 17,643.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,332.53 : 28,060.83 = 12,784.50 : x
  2. Step 2: Convert to fraction form
    20,332.53/28,060.83 = 12,784.50/x
  3. Step 3: Cross multiply
    20,332.53x = 28,060.83 × 12,784.50
  4. Step 4: Simplify right side
    20,332.53x = 358,743,681.14
  5. Step 5: Solve for x
    x = 358,743,681.14/20,332.53
  6. Step 6: Final answer
    x = 17,643.83

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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.