Home / 21,045.29-29,045.01-15,377.18

Finding the Fourth Proportional to 21,045.29, 29,045.01 and 15,377.18

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Solution

The fourth proportional to 21,045.29, 29,045.01 and 15,377.18 is: 21,222.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,045.29 : 29,045.01 = 15,377.18 : x
  2. Step 2: Convert to fraction form
    21,045.29/29,045.01 = 15,377.18/x
  3. Step 3: Cross multiply
    21,045.29x = 29,045.01 × 15,377.18
  4. Step 4: Simplify right side
    21,045.29x = 446,630,259.31
  5. Step 5: Solve for x
    x = 446,630,259.31/21,045.29
  6. Step 6: Final answer
    x = 21,222.34

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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.