Home / 15,000,510.96-20,700,711-8,124,971.76

Finding the Fourth Proportional to 15,000,510.96, 20,700,711 and 8,124,971.76

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Solution

The fourth proportional to 15,000,510.96, 20,700,711 and 8,124,971.76 is: 11,212,464.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,000,510.96 : 20,700,711 = 8,124,971.76 : x
  2. Step 2: Convert to fraction form
    15,000,510.96/20,700,711 = 8,124,971.76/x
  3. Step 3: Cross multiply
    15,000,510.96x = 20,700,711 × 8,124,971.76
  4. Step 4: Simplify right side
    15,000,510.96x = 168,192,692,286,921.34
  5. Step 5: Solve for x
    x = 168,192,692,286,921.34/15,000,510.96
  6. Step 6: Final answer
    x = 11,212,464.21

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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.