Home / 21,969.64-30,309.66-12,533.20

Finding the Fourth Proportional to 21,969.64, 30,309.66 and 12,533.20

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Solution

The fourth proportional to 21,969.64, 30,309.66 and 12,533.20 is: 17,291.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,969.64 : 30,309.66 = 12,533.20 : x
  2. Step 2: Convert to fraction form
    21,969.64/30,309.66 = 12,533.20/x
  3. Step 3: Cross multiply
    21,969.64x = 30,309.66 × 12,533.20
  4. Step 4: Simplify right side
    21,969.64x = 379,877,030.71
  5. Step 5: Solve for x
    x = 379,877,030.71/21,969.64
  6. Step 6: Final answer
    x = 17,291.00

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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.