Home / 43,015.83-64,521.45-13,430.28

Finding the Fourth Proportional to 43,015.83, 64,521.45 and 13,430.28

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Solution

The fourth proportional to 43,015.83, 64,521.45 and 13,430.28 is: 20,144.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,015.83 : 64,521.45 = 13,430.28 : x
  2. Step 2: Convert to fraction form
    43,015.83/64,521.45 = 13,430.28/x
  3. Step 3: Cross multiply
    43,015.83x = 64,521.45 × 13,430.28
  4. Step 4: Simplify right side
    43,015.83x = 866,541,139.51
  5. Step 5: Solve for x
    x = 866,541,139.51/43,015.83
  6. Step 6: Final answer
    x = 20,144.70

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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.