Home / 28,275,999.20-42,426,440.40-13,122,130.40

Finding the Fourth Proportional to 28,275,999.20, 42,426,440.40 and 13,122,130.40

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Solution

The fourth proportional to 28,275,999.20, 42,426,440.40 and 13,122,130.40 is: 19,688,969.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,275,999.20 : 42,426,440.40 = 13,122,130.40 : x
  2. Step 2: Convert to fraction form
    28,275,999.20/42,426,440.40 = 13,122,130.40/x
  3. Step 3: Cross multiply
    28,275,999.20x = 42,426,440.40 × 13,122,130.40
  4. Step 4: Simplify right side
    28,275,999.20x = 556,725,283,336,628.19
  5. Step 5: Solve for x
    x = 556,725,283,336,628.19/28,275,999.20
  6. Step 6: Final answer
    x = 19,688,969.41

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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.