Home / 19,322.19-26,689.64-15,978.51

Finding the Fourth Proportional to 19,322.19, 26,689.64 and 15,978.51

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Solution

The fourth proportional to 19,322.19, 26,689.64 and 15,978.51 is: 22,071.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,322.19 : 26,689.64 = 15,978.51 : x
  2. Step 2: Convert to fraction form
    19,322.19/26,689.64 = 15,978.51/x
  3. Step 3: Cross multiply
    19,322.19x = 26,689.64 × 15,978.51
  4. Step 4: Simplify right side
    19,322.19x = 426,460,599.74
  5. Step 5: Solve for x
    x = 426,460,599.74/19,322.19
  6. Step 6: Final answer
    x = 22,071.03

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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.