Home / 14,501.81-20,001.39-9,720.26

Finding the Fourth Proportional to 14,501.81, 20,001.39 and 9,720.26

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Solution

The fourth proportional to 14,501.81, 20,001.39 and 9,720.26 is: 13,406.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,501.81 : 20,001.39 = 9,720.26 : x
  2. Step 2: Convert to fraction form
    14,501.81/20,001.39 = 9,720.26/x
  3. Step 3: Cross multiply
    14,501.81x = 20,001.39 × 9,720.26
  4. Step 4: Simplify right side
    14,501.81x = 194,418,711.16
  5. Step 5: Solve for x
    x = 194,418,711.16/14,501.81
  6. Step 6: Final answer
    x = 13,406.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.