Home / 42,955.12-64,420.32-17,994.56

Finding the Fourth Proportional to 42,955.12, 64,420.32 and 17,994.56

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Solution

The fourth proportional to 42,955.12, 64,420.32 and 17,994.56 is: 26,986.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,955.12 : 64,420.32 = 17,994.56 : x
  2. Step 2: Convert to fraction form
    42,955.12/64,420.32 = 17,994.56/x
  3. Step 3: Cross multiply
    42,955.12x = 64,420.32 × 17,994.56
  4. Step 4: Simplify right side
    42,955.12x = 1,159,215,313.46
  5. Step 5: Solve for x
    x = 1,159,215,313.46/42,955.12
  6. Step 6: Final answer
    x = 26,986.67

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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.