Home / 15,864.63-21,890.30-9,574.71

Finding the Fourth Proportional to 15,864.63, 21,890.30 and 9,574.71

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Solution

The fourth proportional to 15,864.63, 21,890.30 and 9,574.71 is: 13,211.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,864.63 : 21,890.30 = 9,574.71 : x
  2. Step 2: Convert to fraction form
    15,864.63/21,890.30 = 9,574.71/x
  3. Step 3: Cross multiply
    15,864.63x = 21,890.30 × 9,574.71
  4. Step 4: Simplify right side
    15,864.63x = 209,593,226.44
  5. Step 5: Solve for x
    x = 209,593,226.44/15,864.63
  6. Step 6: Final answer
    x = 13,211.35

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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.