Home / 19,155.16-26,437.75-11,988.40

Finding the Fourth Proportional to 19,155.16, 26,437.75 and 11,988.40

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Solution

The fourth proportional to 19,155.16, 26,437.75 and 11,988.40 is: 16,546.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,155.16 : 26,437.75 = 11,988.40 : x
  2. Step 2: Convert to fraction form
    19,155.16/26,437.75 = 11,988.40/x
  3. Step 3: Cross multiply
    19,155.16x = 26,437.75 × 11,988.40
  4. Step 4: Simplify right side
    19,155.16x = 316,946,352.07
  5. Step 5: Solve for x
    x = 316,946,352.07/19,155.16
  6. Step 6: Final answer
    x = 16,546.27

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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.