Home / 21,547.20-29,748.96-19,421.76

Finding the Fourth Proportional to 21,547.20, 29,748.96 and 19,421.76

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Solution

The fourth proportional to 21,547.20, 29,748.96 and 19,421.76 is: 26,814.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,547.20 : 29,748.96 = 19,421.76 : x
  2. Step 2: Convert to fraction form
    21,547.20/29,748.96 = 19,421.76/x
  3. Step 3: Cross multiply
    21,547.20x = 29,748.96 × 19,421.76
  4. Step 4: Simplify right side
    21,547.20x = 577,777,161.37
  5. Step 5: Solve for x
    x = 577,777,161.37/21,547.20
  6. Step 6: Final answer
    x = 26,814.49

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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.