Home / 20,425,496.40-30,638,244.60-18,866,602.80

Finding the Fourth Proportional to 20,425,496.40, 30,638,244.60 and 18,866,602.80

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Solution

The fourth proportional to 20,425,496.40, 30,638,244.60 and 18,866,602.80 is: 28,299,904.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,425,496.40 : 30,638,244.60 = 18,866,602.80 : x
  2. Step 2: Convert to fraction form
    20,425,496.40/30,638,244.60 = 18,866,602.80/x
  3. Step 3: Cross multiply
    20,425,496.40x = 30,638,244.60 × 18,866,602.80
  4. Step 4: Simplify right side
    20,425,496.40x = 578,039,591,357,444.88
  5. Step 5: Solve for x
    x = 578,039,591,357,444.88/20,425,496.40
  6. Step 6: Final answer
    x = 28,299,904.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.