Home / 15,281.36-21,088.40-8,566.96

Finding the Fourth Proportional to 15,281.36, 21,088.40 and 8,566.96

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Solution

The fourth proportional to 15,281.36, 21,088.40 and 8,566.96 is: 11,822.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.36 : 21,088.40 = 8,566.96 : x
  2. Step 2: Convert to fraction form
    15,281.36/21,088.40 = 8,566.96/x
  3. Step 3: Cross multiply
    15,281.36x = 21,088.40 × 8,566.96
  4. Step 4: Simplify right side
    15,281.36x = 180,663,479.26
  5. Step 5: Solve for x
    x = 180,663,479.26/15,281.36
  6. Step 6: Final answer
    x = 11,822.47

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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.