Home / 43,145.42-64,720.91-13,564.40

Finding the Fourth Proportional to 43,145.42, 64,720.91 and 13,564.40

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Solution

The fourth proportional to 43,145.42, 64,720.91 and 13,564.40 is: 20,347.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,145.42 : 64,720.91 = 13,564.40 : x
  2. Step 2: Convert to fraction form
    43,145.42/64,720.91 = 13,564.40/x
  3. Step 3: Cross multiply
    43,145.42x = 64,720.91 × 13,564.40
  4. Step 4: Simplify right side
    43,145.42x = 877,899,920.18
  5. Step 5: Solve for x
    x = 877,899,920.18/43,145.42
  6. Step 6: Final answer
    x = 20,347.47

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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.