Home / 15,210.40-20,988.27-8,495.17

Finding the Fourth Proportional to 15,210.40, 20,988.27 and 8,495.17

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Solution

The fourth proportional to 15,210.40, 20,988.27 and 8,495.17 is: 11,722.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,210.40 : 20,988.27 = 8,495.17 : x
  2. Step 2: Convert to fraction form
    15,210.40/20,988.27 = 8,495.17/x
  3. Step 3: Cross multiply
    15,210.40x = 20,988.27 × 8,495.17
  4. Step 4: Simplify right side
    15,210.40x = 178,298,816.71
  5. Step 5: Solve for x
    x = 178,298,816.71/15,210.40
  6. Step 6: Final answer
    x = 11,722.17

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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.