Home / 42,768.18-64,155.51-11,605.86

Finding the Fourth Proportional to 42,768.18, 64,155.51 and 11,605.86

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Solution

The fourth proportional to 42,768.18, 64,155.51 and 11,605.86 is: 17,409.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,768.18 : 64,155.51 = 11,605.86 : x
  2. Step 2: Convert to fraction form
    42,768.18/64,155.51 = 11,605.86/x
  3. Step 3: Cross multiply
    42,768.18x = 64,155.51 × 11,605.86
  4. Step 4: Simplify right side
    42,768.18x = 744,579,867.29
  5. Step 5: Solve for x
    x = 744,579,867.29/42,768.18
  6. Step 6: Final answer
    x = 17,409.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.