Home / 15,128,598.55-20,875,856.15-8,513,071.48

Finding the Fourth Proportional to 15,128,598.55, 20,875,856.15 and 8,513,071.48

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Solution

The fourth proportional to 15,128,598.55, 20,875,856.15 and 8,513,071.48 is: 11,747,132.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,128,598.55 : 20,875,856.15 = 8,513,071.48 : x
  2. Step 2: Convert to fraction form
    15,128,598.55/20,875,856.15 = 8,513,071.48/x
  3. Step 3: Cross multiply
    15,128,598.55x = 20,875,856.15 × 8,513,071.48
  4. Step 4: Simplify right side
    15,128,598.55x = 177,717,655,611,147.59
  5. Step 5: Solve for x
    x = 177,717,655,611,147.59/15,128,598.55
  6. Step 6: Final answer
    x = 11,747,132.76

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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.