Home / 15,152.51-20,916.92-10,187.39

Finding the Fourth Proportional to 15,152.51, 20,916.92 and 10,187.39

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Solution

The fourth proportional to 15,152.51, 20,916.92 and 10,187.39 is: 14,062.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,152.51 : 20,916.92 = 10,187.39 : x
  2. Step 2: Convert to fraction form
    15,152.51/20,916.92 = 10,187.39/x
  3. Step 3: Cross multiply
    15,152.51x = 20,916.92 × 10,187.39
  4. Step 4: Simplify right side
    15,152.51x = 213,088,821.64
  5. Step 5: Solve for x
    x = 213,088,821.64/15,152.51
  6. Step 6: Final answer
    x = 14,062.94

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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.