Home / 19,070-26,316.60-10,689.20

Finding the Fourth Proportional to 19,070, 26,316.60 and 10,689.20

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Solution

The fourth proportional to 19,070, 26,316.60 and 10,689.20 is: 14,751.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,070 : 26,316.60 = 10,689.20 : x
  2. Step 2: Convert to fraction form
    19,070/26,316.60 = 10,689.20/x
  3. Step 3: Cross multiply
    19,070x = 26,316.60 × 10,689.20
  4. Step 4: Simplify right side
    19,070x = 281,303,400.72
  5. Step 5: Solve for x
    x = 281,303,400.72/19,070
  6. Step 6: Final answer
    x = 14,751.10

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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.