Home / 15,740.89-21,726.12-9,777.06

Finding the Fourth Proportional to 15,740.89, 21,726.12 and 9,777.06

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Solution

The fourth proportional to 15,740.89, 21,726.12 and 9,777.06 is: 13,494.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,740.89 : 21,726.12 = 9,777.06 : x
  2. Step 2: Convert to fraction form
    15,740.89/21,726.12 = 9,777.06/x
  3. Step 3: Cross multiply
    15,740.89x = 21,726.12 × 9,777.06
  4. Step 4: Simplify right side
    15,740.89x = 212,417,578.81
  5. Step 5: Solve for x
    x = 212,417,578.81/15,740.89
  6. Step 6: Final answer
    x = 13,494.64

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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.