Home / 15,812.08-21,812.80-9,434.20

Finding the Fourth Proportional to 15,812.08, 21,812.80 and 9,434.20

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Solution

The fourth proportional to 15,812.08, 21,812.80 and 9,434.20 is: 13,014.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,812.08 : 21,812.80 = 9,434.20 : x
  2. Step 2: Convert to fraction form
    15,812.08/21,812.80 = 9,434.20/x
  3. Step 3: Cross multiply
    15,812.08x = 21,812.80 × 9,434.20
  4. Step 4: Simplify right side
    15,812.08x = 205,786,317.76
  5. Step 5: Solve for x
    x = 205,786,317.76/15,812.08
  6. Step 6: Final answer
    x = 13,014.50

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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.