Home / 18,688,007.40-28,032,011.10-6,719,188.20

Finding the Fourth Proportional to 18,688,007.40, 28,032,011.10 and 6,719,188.20

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Solution

The fourth proportional to 18,688,007.40, 28,032,011.10 and 6,719,188.20 is: 10,078,782.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,688,007.40 : 28,032,011.10 = 6,719,188.20 : x
  2. Step 2: Convert to fraction form
    18,688,007.40/28,032,011.10 = 6,719,188.20/x
  3. Step 3: Cross multiply
    18,688,007.40x = 28,032,011.10 × 6,719,188.20
  4. Step 4: Simplify right side
    18,688,007.40x = 188,352,358,205,389.03
  5. Step 5: Solve for x
    x = 188,352,358,205,389.03/18,688,007.40
  6. Step 6: Final answer
    x = 10,078,782.30

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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.