Home / 11,526.48-15,913.80-7,988.40

Finding the Fourth Proportional to 11,526.48, 15,913.80 and 7,988.40

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Solution

The fourth proportional to 11,526.48, 15,913.80 and 7,988.40 is: 11,029.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,526.48 : 15,913.80 = 7,988.40 : x
  2. Step 2: Convert to fraction form
    11,526.48/15,913.80 = 7,988.40/x
  3. Step 3: Cross multiply
    11,526.48x = 15,913.80 × 7,988.40
  4. Step 4: Simplify right side
    11,526.48x = 127,125,799.92
  5. Step 5: Solve for x
    x = 127,125,799.92/11,526.48
  6. Step 6: Final answer
    x = 11,029.02

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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.