Home / 21,053.49-31,580.39-14,459.69

Finding the Fourth Proportional to 21,053.49, 31,580.39 and 14,459.69

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Solution

The fourth proportional to 21,053.49, 31,580.39 and 14,459.69 is: 21,689.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,053.49 : 31,580.39 = 14,459.69 : x
  2. Step 2: Convert to fraction form
    21,053.49/31,580.39 = 14,459.69/x
  3. Step 3: Cross multiply
    21,053.49x = 31,580.39 × 14,459.69
  4. Step 4: Simplify right side
    21,053.49x = 456,642,649.48
  5. Step 5: Solve for x
    x = 456,642,649.48/21,053.49
  6. Step 6: Final answer
    x = 21,689.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.