Home / 15,281.24-21,088.10-8,908.10

Finding the Fourth Proportional to 15,281.24, 21,088.10 and 8,908.10

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Solution

The fourth proportional to 15,281.24, 21,088.10 and 8,908.10 is: 12,293.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,281.24 : 21,088.10 = 8,908.10 : x
  2. Step 2: Convert to fraction form
    15,281.24/21,088.10 = 8,908.10/x
  3. Step 3: Cross multiply
    15,281.24x = 21,088.10 × 8,908.10
  4. Step 4: Simplify right side
    15,281.24x = 187,854,845.74
  5. Step 5: Solve for x
    x = 187,854,845.74/15,281.24
  6. Step 6: Final answer
    x = 12,293.17

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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.