Home / 14,159.18-21,239.58-4,298.78

Finding the Fourth Proportional to 14,159.18, 21,239.58 and 4,298.78

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Solution

The fourth proportional to 14,159.18, 21,239.58 and 4,298.78 is: 6,448.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,159.18 : 21,239.58 = 4,298.78 : x
  2. Step 2: Convert to fraction form
    14,159.18/21,239.58 = 4,298.78/x
  3. Step 3: Cross multiply
    14,159.18x = 21,239.58 × 4,298.78
  4. Step 4: Simplify right side
    14,159.18x = 91,304,281.71
  5. Step 5: Solve for x
    x = 91,304,281.71/14,159.18
  6. Step 6: Final answer
    x = 6,448.42

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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.