Home / 43,153.40-64,730.10-13,580.30

Finding the Fourth Proportional to 43,153.40, 64,730.10 and 13,580.30

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Solution

The fourth proportional to 43,153.40, 64,730.10 and 13,580.30 is: 20,370.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,153.40 : 64,730.10 = 13,580.30 : x
  2. Step 2: Convert to fraction form
    43,153.40/64,730.10 = 13,580.30/x
  3. Step 3: Cross multiply
    43,153.40x = 64,730.10 × 13,580.30
  4. Step 4: Simplify right side
    43,153.40x = 879,054,177.03
  5. Step 5: Solve for x
    x = 879,054,177.03/43,153.40
  6. Step 6: Final answer
    x = 20,370.45

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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.