Home / 43,312.19-64,994.20-18,688.19

Finding the Fourth Proportional to 43,312.19, 64,994.20 and 18,688.19

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Solution

The fourth proportional to 43,312.19, 64,994.20 and 18,688.19 is: 28,043.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,312.19 : 64,994.20 = 18,688.19 : x
  2. Step 2: Convert to fraction form
    43,312.19/64,994.20 = 18,688.19/x
  3. Step 3: Cross multiply
    43,312.19x = 64,994.20 × 18,688.19
  4. Step 4: Simplify right side
    43,312.19x = 1,214,623,958.50
  5. Step 5: Solve for x
    x = 1,214,623,958.50/43,312.19
  6. Step 6: Final answer
    x = 28,043.47

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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.