Home / 28,354,857.20-42,532,285.80-13,210,319.60

Finding the Fourth Proportional to 28,354,857.20, 42,532,285.80 and 13,210,319.60

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Solution

The fourth proportional to 28,354,857.20, 42,532,285.80 and 13,210,319.60 is: 19,815,479.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,354,857.20 : 42,532,285.80 = 13,210,319.60 : x
  2. Step 2: Convert to fraction form
    28,354,857.20/42,532,285.80 = 13,210,319.60/x
  3. Step 3: Cross multiply
    28,354,857.20x = 42,532,285.80 × 13,210,319.60
  4. Step 4: Simplify right side
    28,354,857.20x = 561,865,088,736,541.62
  5. Step 5: Solve for x
    x = 561,865,088,736,541.62/28,354,857.20
  6. Step 6: Final answer
    x = 19,815,479.40

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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.