Home / 14,647.60-20,215.71-8,981.35

Finding the Fourth Proportional to 14,647.60, 20,215.71 and 8,981.35

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Solution

The fourth proportional to 14,647.60, 20,215.71 and 8,981.35 is: 12,395.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,647.60 : 20,215.71 = 8,981.35 : x
  2. Step 2: Convert to fraction form
    14,647.60/20,215.71 = 8,981.35/x
  3. Step 3: Cross multiply
    14,647.60x = 20,215.71 × 8,981.35
  4. Step 4: Simplify right side
    14,647.60x = 181,564,316.47
  5. Step 5: Solve for x
    x = 181,564,316.47/14,647.60
  6. Step 6: Final answer
    x = 12,395.50

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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.