Home / 19,001.09-28,507.78-9,139.08

Finding the Fourth Proportional to 19,001.09, 28,507.78 and 9,139.08

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Solution

The fourth proportional to 19,001.09, 28,507.78 and 9,139.08 is: 13,711.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,001.09 : 28,507.78 = 9,139.08 : x
  2. Step 2: Convert to fraction form
    19,001.09/28,507.78 = 9,139.08/x
  3. Step 3: Cross multiply
    19,001.09x = 28,507.78 × 9,139.08
  4. Step 4: Simplify right side
    19,001.09x = 260,534,859.19
  5. Step 5: Solve for x
    x = 260,534,859.19/19,001.09
  6. Step 6: Final answer
    x = 13,711.58

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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.