Home / 13,268,720.55-18,316,484.13-8,920,328.88

Finding the Fourth Proportional to 13,268,720.55, 18,316,484.13 and 8,920,328.88

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Solution

The fourth proportional to 13,268,720.55, 18,316,484.13 and 8,920,328.88 is: 12,313,852.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,268,720.55 : 18,316,484.13 = 8,920,328.88 : x
  2. Step 2: Convert to fraction form
    13,268,720.55/18,316,484.13 = 8,920,328.88/x
  3. Step 3: Cross multiply
    13,268,720.55x = 18,316,484.13 × 8,920,328.88
  4. Step 4: Simplify right side
    13,268,720.55x = 163,389,062,364,900.69
  5. Step 5: Solve for x
    x = 163,389,062,364,900.69/13,268,720.55
  6. Step 6: Final answer
    x = 12,313,852.10

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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.