Home / 20,920.59-28,831.47-14,206.50

Finding the Fourth Proportional to 20,920.59, 28,831.47 and 14,206.50

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Solution

The fourth proportional to 20,920.59, 28,831.47 and 14,206.50 is: 19,578.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,920.59 : 28,831.47 = 14,206.50 : x
  2. Step 2: Convert to fraction form
    20,920.59/28,831.47 = 14,206.50/x
  3. Step 3: Cross multiply
    20,920.59x = 28,831.47 × 14,206.50
  4. Step 4: Simplify right side
    20,920.59x = 409,594,184.15
  5. Step 5: Solve for x
    x = 409,594,184.15/20,920.59
  6. Step 6: Final answer
    x = 19,578.52

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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.