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Finding the Fourth Proportional to 19,507.76, 26,921.10 and 11,547.08

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Solution

The fourth proportional to 19,507.76, 26,921.10 and 11,547.08 is: 15,935.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,507.76 : 26,921.10 = 11,547.08 : x
  2. Step 2: Convert to fraction form
    19,507.76/26,921.10 = 11,547.08/x
  3. Step 3: Cross multiply
    19,507.76x = 26,921.10 × 11,547.08
  4. Step 4: Simplify right side
    19,507.76x = 310,860,095.39
  5. Step 5: Solve for x
    x = 310,860,095.39/19,507.76
  6. Step 6: Final answer
    x = 15,935.20

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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.