Home / 19,870.56-27,422.01-10,918.89

Finding the Fourth Proportional to 19,870.56, 27,422.01 and 10,918.89

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Solution

The fourth proportional to 19,870.56, 27,422.01 and 10,918.89 is: 15,068.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,870.56 : 27,422.01 = 10,918.89 : x
  2. Step 2: Convert to fraction form
    19,870.56/27,422.01 = 10,918.89/x
  3. Step 3: Cross multiply
    19,870.56x = 27,422.01 × 10,918.89
  4. Step 4: Simplify right side
    19,870.56x = 299,417,910.77
  5. Step 5: Solve for x
    x = 299,417,910.77/19,870.56
  6. Step 6: Final answer
    x = 15,068.42

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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.