Home / 18,973.47-26,159.05-15,557.90

Finding the Fourth Proportional to 18,973.47, 26,159.05 and 15,557.90

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Solution

The fourth proportional to 18,973.47, 26,159.05 and 15,557.90 is: 21,449.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,973.47 : 26,159.05 = 15,557.90 : x
  2. Step 2: Convert to fraction form
    18,973.47/26,159.05 = 15,557.90/x
  3. Step 3: Cross multiply
    18,973.47x = 26,159.05 × 15,557.90
  4. Step 4: Simplify right side
    18,973.47x = 406,979,714.31
  5. Step 5: Solve for x
    x = 406,979,714.31/18,973.47
  6. Step 6: Final answer
    x = 21,449.94

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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.