Home / 15,005,459.21-20,707,263.50-8,478,948.20

Finding the Fourth Proportional to 15,005,459.21, 20,707,263.50 and 8,478,948.20

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Solution

The fourth proportional to 15,005,459.21, 20,707,263.50 and 8,478,948.20 is: 11,700,795.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,005,459.21 : 20,707,263.50 = 8,478,948.20 : x
  2. Step 2: Convert to fraction form
    15,005,459.21/20,707,263.50 = 8,478,948.20/x
  3. Step 3: Cross multiply
    15,005,459.21x = 20,707,263.50 × 8,478,948.20
  4. Step 4: Simplify right side
    15,005,459.21x = 175,575,814,434,319.66
  5. Step 5: Solve for x
    x = 175,575,814,434,319.66/15,005,459.21
  6. Step 6: Final answer
    x = 11,700,795.83

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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.