Home / 10,905.60-15,051.24-6,430.62

Finding the Fourth Proportional to 10,905.60, 15,051.24 and 6,430.62

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Solution

The fourth proportional to 10,905.60, 15,051.24 and 6,430.62 is: 8,875.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,905.60 : 15,051.24 = 6,430.62 : x
  2. Step 2: Convert to fraction form
    10,905.60/15,051.24 = 6,430.62/x
  3. Step 3: Cross multiply
    10,905.60x = 15,051.24 × 6,430.62
  4. Step 4: Simplify right side
    10,905.60x = 96,788,804.97
  5. Step 5: Solve for x
    x = 96,788,804.97/10,905.60
  6. Step 6: Final answer
    x = 8,875.15

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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.