Home / 15,921,904.02-21,966,942.19-12,976,656.76

Finding the Fourth Proportional to 15,921,904.02, 21,966,942.19 and 12,976,656.76

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Solution

The fourth proportional to 15,921,904.02, 21,966,942.19 and 12,976,656.76 is: 17,903,478.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,921,904.02 : 21,966,942.19 = 12,976,656.76 : x
  2. Step 2: Convert to fraction form
    15,921,904.02/21,966,942.19 = 12,976,656.76/x
  3. Step 3: Cross multiply
    15,921,904.02x = 21,966,942.19 × 12,976,656.76
  4. Step 4: Simplify right side
    15,921,904.02x = 285,057,468,984,037.31
  5. Step 5: Solve for x
    x = 285,057,468,984,037.31/15,921,904.02
  6. Step 6: Final answer
    x = 17,903,478.67

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Double scale
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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.