Home / 18,678,854.40-28,018,281.60-7,315,526.40

Finding the Fourth Proportional to 18,678,854.40, 28,018,281.60 and 7,315,526.40

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Solution

The fourth proportional to 18,678,854.40, 28,018,281.60 and 7,315,526.40 is: 10,973,289.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,678,854.40 : 28,018,281.60 = 7,315,526.40 : x
  2. Step 2: Convert to fraction form
    18,678,854.40/28,018,281.60 = 7,315,526.40/x
  3. Step 3: Cross multiply
    18,678,854.40x = 28,018,281.60 × 7,315,526.40
  4. Step 4: Simplify right side
    18,678,854.40x = 204,968,478,727,434.25
  5. Step 5: Solve for x
    x = 204,968,478,727,434.25/18,678,854.40
  6. Step 6: Final answer
    x = 10,973,289.60

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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.