Home / 15,130.07-20,873.75-9,384.86

Finding the Fourth Proportional to 15,130.07, 20,873.75 and 9,384.86

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Solution

The fourth proportional to 15,130.07, 20,873.75 and 9,384.86 is: 12,947.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,130.07 : 20,873.75 = 9,384.86 : x
  2. Step 2: Convert to fraction form
    15,130.07/20,873.75 = 9,384.86/x
  3. Step 3: Cross multiply
    15,130.07x = 20,873.75 × 9,384.86
  4. Step 4: Simplify right side
    15,130.07x = 195,897,070.13
  5. Step 5: Solve for x
    x = 195,897,070.13/15,130.07
  6. Step 6: Final answer
    x = 12,947.54

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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.