Home / 28,121,419.48-42,173,406.54-9,921,358.60

Finding the Fourth Proportional to 28,121,419.48, 42,173,406.54 and 9,921,358.60

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Solution

The fourth proportional to 28,121,419.48, 42,173,406.54 and 9,921,358.60 is: 14,878,960.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,121,419.48 : 42,173,406.54 = 9,921,358.60 : x
  2. Step 2: Convert to fraction form
    28,121,419.48/42,173,406.54 = 9,921,358.60/x
  3. Step 3: Cross multiply
    28,121,419.48x = 42,173,406.54 × 9,921,358.60
  4. Step 4: Simplify right side
    28,121,419.48x = 418,417,489,666,925.25
  5. Step 5: Solve for x
    x = 418,417,489,666,925.25/28,121,419.48
  6. Step 6: Final answer
    x = 14,878,960.50

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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.