Home / 15,261.51-21,061.01-8,547.42

Finding the Fourth Proportional to 15,261.51, 21,061.01 and 8,547.42

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Solution

The fourth proportional to 15,261.51, 21,061.01 and 8,547.42 is: 11,795.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,261.51 : 21,061.01 = 8,547.42 : x
  2. Step 2: Convert to fraction form
    15,261.51/21,061.01 = 8,547.42/x
  3. Step 3: Cross multiply
    15,261.51x = 21,061.01 × 8,547.42
  4. Step 4: Simplify right side
    15,261.51x = 180,017,398.44
  5. Step 5: Solve for x
    x = 180,017,398.44/15,261.51
  6. Step 6: Final answer
    x = 11,795.51

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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.