Home / 14,803.60-20,432.40-9,768.72

Finding the Fourth Proportional to 14,803.60, 20,432.40 and 9,768.72

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Solution

The fourth proportional to 14,803.60, 20,432.40 and 9,768.72 is: 13,483.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,803.60 : 20,432.40 = 9,768.72 : x
  2. Step 2: Convert to fraction form
    14,803.60/20,432.40 = 9,768.72/x
  3. Step 3: Cross multiply
    14,803.60x = 20,432.40 × 9,768.72
  4. Step 4: Simplify right side
    14,803.60x = 199,598,394.53
  5. Step 5: Solve for x
    x = 199,598,394.53/14,803.60
  6. Step 6: Final answer
    x = 13,483.10

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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.